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SyntaxSageNik
LeetCode 560: Subarray Sum = K - Prefix HashMap O(n) Genius! 📊🚀😊👍

LeetCode 560 Subarray Sum Equals K! Prefix sums + HashMap = O(n). Insight: sum[i:j] = prefix[j] - prefix[i-1] = k Trace [1,1,1] k=2: ...

7:07
LeetCode 560: Subarray Sum = K - Prefix HashMap O(n) Genius! 📊🚀😊👍

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41 minutes ago