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... modifying elements Looping through 2D arrays (with nested loops and for-each) Common use cases: matrix, tables, row/column ...

... use a hash array to track characters ✓ How nested loops work in problem solving ✓ How to calculate substring length correctly ...

Example: Input: nums = [2, 7, 11, 15], target = 9 Output: [0, 1] Brute Force Approach ✔️ Check all pairs using two nested loops ...

For Loop: Initialization, Condition, and Increment/Decrement. Nested Loops: Using a loop inside a loop (Perfect for pattern ...

Furthermore, the source demonstrates geometric transformations by using nested loops to transpose pixel coordinates for image ...

Each video explains logic step-by-step, helping beginners understand loops, nested loops, and logic building easily. Perfect for ...