Episode 7 — DSA with JavaScript / 7.2 — Loops Nested Loops Pattern Programming

7.2.c — Break, Continue & Infinite Loops

<< 7.2 Overview

The break statement

break immediately exits the innermost loop.

┌─────────────────────┐
│ Loop                │
│  ┌────────────────┐ │
│  │ if (condition) │ │
│  │   break; ──────┼─┼──▶ EXIT loop
│  └────────────────┘ │
│  ... rest of body   │
└─────────────────────┘

JavaScript — find first negative

function findFirstNegative(arr) {
    for (let i = 0; i < arr.length; i++) {
        if (arr[i] < 0) {
            console.log(`First negative: ${arr[i]} at index ${i}`);
            break;
        }
    }
}

findFirstNegative([3, 7, -2, 5, -8]);
// "First negative: -2 at index 2"

// Dry-run:
// i=0: arr[0]=3  → 3<0? false → continue
// i=1: arr[1]=7  → 7<0? false → continue
// i=2: arr[2]=-2 → -2<0? true → print, break

C++

#include <iostream>
#include <vector>
using namespace std;

void findFirstNegative(const vector<int>& arr) {
    for (int i = 0; i < arr.size(); i++) {
        if (arr[i] < 0) {
            cout << "First negative: " << arr[i] << " at index " << i << endl;
            break;
        }
    }
}

Break in nested loops

break only exits the inner loop:

for (let i = 0; i < 3; i++) {
    for (let j = 0; j < 5; j++) {
        if (j === 3) break;    // breaks inner loop only
        process.stdout.write(`(${i},${j}) `);
    }
    console.log();
}
// Output:
// (0,0) (0,1) (0,2)
// (1,0) (1,1) (1,2)
// (2,0) (2,1) (2,2)

Labeled break (JS) / goto-like (C++)

// JavaScript: labeled break exits the outer loop
outer:
for (let i = 0; i < 5; i++) {
    for (let j = 0; j < 5; j++) {
        if (i + j > 4) break outer;
        process.stdout.write(`(${i},${j}) `);
    }
    console.log();
}

The continue statement

continue skips the rest of the current iteration and moves to the next.

┌─────────────────────────┐
│ Loop                    │
│  ┌────────────────────┐ │
│  │ if (condition)     │ │
│  │   continue; ───────┼─┼──▶ next iteration
│  └────────────────────┘ │
│  ... rest of body       │  ◀── skipped
└─────────────────────────┘

JavaScript — skip even numbers

for (let i = 1; i <= 10; i++) {
    if (i % 2 === 0) continue;
    console.log(i);
}
// 1, 3, 5, 7, 9

C++ — skip vowels

#include <iostream>
#include <string>
using namespace std;

int main() {
    string text = "Hello World";
    string vowels = "aeiouAEIOU";
    for (char c : text) {
        if (vowels.find(c) != string::npos) continue;
        cout << c;
    }
    // Output: Hll Wrld
    return 0;
}

Infinite loops

An infinite loop runs forever unless explicitly broken.

Intentional infinite loops

// Server event loop (simplified)
while (true) {
    const event = getNextEvent();
    if (event.type === "shutdown") break;
    handleEvent(event);
}

// Game loop
while (true) {
    processInput();
    updateState();
    render();
    if (shouldQuit) break;
}

Common causes of accidental infinite loops

// BUG 1: forgetting to update loop variable
let i = 0;
while (i < 10) {
    console.log(i);
    // Missing: i++; → infinite loop!
}

// BUG 2: wrong comparison direction
for (let i = 10; i >= 0; i++) {  // i++ should be i--
    console.log(i);
}

// BUG 3: floating-point comparison
for (let x = 0.0; x !== 1.0; x += 0.1) {
    // 0.1 + 0.1 + ... never exactly equals 1.0!
    console.log(x);
}
// FIX: use x < 1.0 or use integers and divide

Safeguards against infinite loops

// Safeguard: maximum iteration count
let iterations = 0;
const MAX = 10000;
while (condition) {
    if (++iterations > MAX) {
        throw new Error("Possible infinite loop detected");
    }
    // ... loop body
}

Optimization tips for nested loops

1. Early termination with break

// BAD: always checks all elements
function contains(matrix, target) {
    let found = false;
    for (let i = 0; i < matrix.length; i++) {
        for (let j = 0; j < matrix[i].length; j++) {
            if (matrix[i][j] === target) found = true;
        }
    }
    return found;
}

// GOOD: breaks immediately when found
function contains(matrix, target) {
    for (let i = 0; i < matrix.length; i++) {
        for (let j = 0; j < matrix[i].length; j++) {
            if (matrix[i][j] === target) return true;
        }
    }
    return false;
}

2. Reduce inner loop iterations

// BAD: O(n²) for finding duplicates
function hasDuplicates(arr) {
    for (let i = 0; i < arr.length; i++) {
        for (let j = i + 1; j < arr.length; j++) {  // j starts at i+1
            if (arr[i] === arr[j]) return true;
        }
    }
    return false;
}

// BETTER: O(n) with Set
function hasDuplicates(arr) {
    return new Set(arr).size !== arr.length;
}

3. Move invariant computations out

// BAD: recomputes arr.length every iteration
for (let i = 0; i < arr.length; i++) { ... }

// GOOD: cache the length
for (let i = 0, len = arr.length; i < len; i++) { ... }
// (Modern engines optimize this, but the principle matters for expensive computations)

Scenario bank (break, continue, infinite loops)

7.2c-001 — Use break to find the first element matching a predicate (variation 1)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-002 — Use continue to skip blank lines when processing text (variation 2)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-003 — Implement a retry loop with maximum attempts (variation 3)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-004 — Build a number guessing game with while(true) and break (variation 4)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-005 — Use labeled break to exit a matrix search (variation 5)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-006 — Skip processing of invalid records with continue (variation 6)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-007 — Implement a server polling loop with timeout break (variation 7)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-008 — Use continue to filter out odd numbers during accumulation (variation 8)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-009 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 9)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-010 — Implement exponential backoff with while and break (variation 10)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-011 — Use break to implement short-circuit array search (variation 11)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-012 — Skip header row in CSV processing with continue (variation 12)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-013 — Build a round-robin scheduler with infinite loop (variation 13)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-014 — Use continue with labeled loops for 2D processing (variation 14)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-015 — Implement a watchdog timer to prevent infinite loops (variation 15)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-016 — Use break to implement binary search early exit (variation 16)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-017 — Skip null values in array processing with continue (variation 17)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-018 — Build an event loop with priority-based break (variation 18)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-019 — Implement a rate limiter with while loop and break (variation 19)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-020 — Use continue to skip already-processed items (variation 20)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-021 — Use break to find the first element matching a predicate (variation 21)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-022 — Use continue to skip blank lines when processing text (variation 22)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-023 — Implement a retry loop with maximum attempts (variation 23)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-024 — Build a number guessing game with while(true) and break (variation 24)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-025 — Use labeled break to exit a matrix search (variation 25)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-026 — Skip processing of invalid records with continue (variation 26)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-027 — Implement a server polling loop with timeout break (variation 27)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-028 — Use continue to filter out odd numbers during accumulation (variation 28)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-029 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 29)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-030 — Implement exponential backoff with while and break (variation 30)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-031 — Use break to implement short-circuit array search (variation 31)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-032 — Skip header row in CSV processing with continue (variation 32)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-033 — Build a round-robin scheduler with infinite loop (variation 33)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-034 — Use continue with labeled loops for 2D processing (variation 34)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-035 — Implement a watchdog timer to prevent infinite loops (variation 35)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-036 — Use break to implement binary search early exit (variation 36)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-037 — Skip null values in array processing with continue (variation 37)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-038 — Build an event loop with priority-based break (variation 38)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-039 — Implement a rate limiter with while loop and break (variation 39)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-040 — Use continue to skip already-processed items (variation 40)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-041 — Use break to find the first element matching a predicate (variation 41)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-042 — Use continue to skip blank lines when processing text (variation 42)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-043 — Implement a retry loop with maximum attempts (variation 43)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-044 — Build a number guessing game with while(true) and break (variation 44)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-045 — Use labeled break to exit a matrix search (variation 45)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-046 — Skip processing of invalid records with continue (variation 46)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-047 — Implement a server polling loop with timeout break (variation 47)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-048 — Use continue to filter out odd numbers during accumulation (variation 48)

  • Level: Beginner
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-049 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 49)

  • Level: Beginner
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-050 — Implement exponential backoff with while and break (variation 50)

  • Level: Beginner
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-051 — Use break to implement short-circuit array search (variation 51)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-052 — Skip header row in CSV processing with continue (variation 52)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-053 — Build a round-robin scheduler with infinite loop (variation 53)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-054 — Use continue with labeled loops for 2D processing (variation 54)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-055 — Implement a watchdog timer to prevent infinite loops (variation 55)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-056 — Use break to implement binary search early exit (variation 56)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-057 — Skip null values in array processing with continue (variation 57)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-058 — Build an event loop with priority-based break (variation 58)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-059 — Implement a rate limiter with while loop and break (variation 59)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-060 — Use continue to skip already-processed items (variation 60)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-061 — Use break to find the first element matching a predicate (variation 61)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-062 — Use continue to skip blank lines when processing text (variation 62)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-063 — Implement a retry loop with maximum attempts (variation 63)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-064 — Build a number guessing game with while(true) and break (variation 64)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-065 — Use labeled break to exit a matrix search (variation 65)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-066 — Skip processing of invalid records with continue (variation 66)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-067 — Implement a server polling loop with timeout break (variation 67)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-068 — Use continue to filter out odd numbers during accumulation (variation 68)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-069 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 69)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-070 — Implement exponential backoff with while and break (variation 70)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-071 — Use break to implement short-circuit array search (variation 71)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-072 — Skip header row in CSV processing with continue (variation 72)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-073 — Build a round-robin scheduler with infinite loop (variation 73)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-074 — Use continue with labeled loops for 2D processing (variation 74)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-075 — Implement a watchdog timer to prevent infinite loops (variation 75)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-076 — Use break to implement binary search early exit (variation 76)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-077 — Skip null values in array processing with continue (variation 77)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-078 — Build an event loop with priority-based break (variation 78)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-079 — Implement a rate limiter with while loop and break (variation 79)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-080 — Use continue to skip already-processed items (variation 80)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-081 — Use break to find the first element matching a predicate (variation 81)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-082 — Use continue to skip blank lines when processing text (variation 82)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-083 — Implement a retry loop with maximum attempts (variation 83)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-084 — Build a number guessing game with while(true) and break (variation 84)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-085 — Use labeled break to exit a matrix search (variation 85)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-086 — Skip processing of invalid records with continue (variation 86)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-087 — Implement a server polling loop with timeout break (variation 87)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-088 — Use continue to filter out odd numbers during accumulation (variation 88)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-089 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 89)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-090 — Implement exponential backoff with while and break (variation 90)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-091 — Use break to implement short-circuit array search (variation 91)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-092 — Skip header row in CSV processing with continue (variation 92)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-093 — Build a round-robin scheduler with infinite loop (variation 93)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-094 — Use continue with labeled loops for 2D processing (variation 94)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-095 — Implement a watchdog timer to prevent infinite loops (variation 95)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-096 — Use break to implement binary search early exit (variation 96)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-097 — Skip null values in array processing with continue (variation 97)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-098 — Build an event loop with priority-based break (variation 98)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-099 — Implement a rate limiter with while loop and break (variation 99)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-100 — Use continue to skip already-processed items (variation 100)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-101 — Use break to find the first element matching a predicate (variation 101)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-102 — Use continue to skip blank lines when processing text (variation 102)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-103 — Implement a retry loop with maximum attempts (variation 103)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-104 — Build a number guessing game with while(true) and break (variation 104)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-105 — Use labeled break to exit a matrix search (variation 105)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-106 — Skip processing of invalid records with continue (variation 106)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-107 — Implement a server polling loop with timeout break (variation 107)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-108 — Use continue to filter out odd numbers during accumulation (variation 108)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-109 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 109)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-110 — Implement exponential backoff with while and break (variation 110)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-111 — Use break to implement short-circuit array search (variation 111)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-112 — Skip header row in CSV processing with continue (variation 112)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-113 — Build a round-robin scheduler with infinite loop (variation 113)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-114 — Use continue with labeled loops for 2D processing (variation 114)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-115 — Implement a watchdog timer to prevent infinite loops (variation 115)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-116 — Use break to implement binary search early exit (variation 116)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-117 — Skip null values in array processing with continue (variation 117)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-118 — Build an event loop with priority-based break (variation 118)

  • Level: Intermediate
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-119 — Implement a rate limiter with while loop and break (variation 119)

  • Level: Intermediate
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-120 — Use continue to skip already-processed items (variation 120)

  • Level: Intermediate
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-121 — Use break to find the first element matching a predicate (variation 121)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-122 — Use continue to skip blank lines when processing text (variation 122)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-123 — Implement a retry loop with maximum attempts (variation 123)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-124 — Build a number guessing game with while(true) and break (variation 124)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-125 — Use labeled break to exit a matrix search (variation 125)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-126 — Skip processing of invalid records with continue (variation 126)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-127 — Implement a server polling loop with timeout break (variation 127)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-128 — Use continue to filter out odd numbers during accumulation (variation 128)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-129 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 129)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-130 — Implement exponential backoff with while and break (variation 130)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-131 — Use break to implement short-circuit array search (variation 131)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-132 — Skip header row in CSV processing with continue (variation 132)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-133 — Build a round-robin scheduler with infinite loop (variation 133)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-134 — Use continue with labeled loops for 2D processing (variation 134)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-135 — Implement a watchdog timer to prevent infinite loops (variation 135)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-136 — Use break to implement binary search early exit (variation 136)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-137 — Skip null values in array processing with continue (variation 137)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-138 — Build an event loop with priority-based break (variation 138)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-139 — Implement a rate limiter with while loop and break (variation 139)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-140 — Use continue to skip already-processed items (variation 140)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-141 — Use break to find the first element matching a predicate (variation 141)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-142 — Use continue to skip blank lines when processing text (variation 142)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-143 — Implement a retry loop with maximum attempts (variation 143)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-144 — Build a number guessing game with while(true) and break (variation 144)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-145 — Use labeled break to exit a matrix search (variation 145)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-146 — Skip processing of invalid records with continue (variation 146)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-147 — Implement a server polling loop with timeout break (variation 147)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-148 — Use continue to filter out odd numbers during accumulation (variation 148)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-149 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 149)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-150 — Implement exponential backoff with while and break (variation 150)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-151 — Use break to implement short-circuit array search (variation 151)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-152 — Skip header row in CSV processing with continue (variation 152)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-153 — Build a round-robin scheduler with infinite loop (variation 153)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-154 — Use continue with labeled loops for 2D processing (variation 154)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-155 — Implement a watchdog timer to prevent infinite loops (variation 155)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-156 — Use break to implement binary search early exit (variation 156)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-157 — Skip null values in array processing with continue (variation 157)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-158 — Build an event loop with priority-based break (variation 158)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-159 — Implement a rate limiter with while loop and break (variation 159)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-160 — Use continue to skip already-processed items (variation 160)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-161 — Use break to find the first element matching a predicate (variation 161)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-162 — Use continue to skip blank lines when processing text (variation 162)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-163 — Implement a retry loop with maximum attempts (variation 163)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-164 — Build a number guessing game with while(true) and break (variation 164)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-165 — Use labeled break to exit a matrix search (variation 165)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-166 — Skip processing of invalid records with continue (variation 166)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-167 — Implement a server polling loop with timeout break (variation 167)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-168 — Use continue to filter out odd numbers during accumulation (variation 168)

  • Level: Advanced
  • Control flow: break
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-169 — Build a REPL (Read-Eval-Print Loop) with exit command (variation 169)

  • Level: Advanced
  • Control flow: continue
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.

7.2c-170 — Implement exponential backoff with while and break (variation 170)

  • Level: Advanced
  • Control flow: infinite loop
  • Key insight: Understand which loop level is affected by break/continue.
  • Time: Depends on when break/continue triggers — analyze best/worst case.
  • Edge cases: empty collection, immediate break, never-triggered continue.
  • JS & C++ note: Behavior is identical in both languages for break/continue.