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Count Subarrays with Sum K: step-by-step visual explanation

Learn the Count Subarrays with Sum K problem with a step-by-step DSA animation. Follow the Prefix-Sum with Map solution with synced C#, Python, and Java code.

Prefix-Sum with Map pattern

The map connects the current prefix sum to earlier sums, turning a nested subarray search into one pass.

Difficulty: Medium · Approach: Key-value memory

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