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DSA

Definition: Data Structures and Algorithms (DSA) define how data is stored and processed efficiently. Explanation: Data structures organize data, while algorithms define operations. Efficiency depends on choosing the right approach. Code: def linear_search(arr, target): return arr.index(target) if target in arr else -1 arr = [15, 22, 8, 19, 31] print(linear_search(arr, 19)) Example Output: 3

( For security reasons you cannot modify the code )

key Insight: Efficiency depends on correct structure and logic choice.

Common Pitfall: Ignoring performance and focusing only on correctness.

Why it matters: Core concept tested in all coding interviews.

Common Mistake: Using loops incorrectly causing errors.

Simple Takeaway: Choose the right structure for efficiency.