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Subarray Sum Equals K

Explore how to determine the total number of contiguous subarrays whose sum equals a target value k. This lesson helps you understand the use of hash maps to efficiently track cumulative sums and count subarrays, improving your problem-solving skills for coding interviews.

Statement

Given an array of integers nums and an integer k, determine the total number of subarrays whose sum is exactly equal to k.

Note: A subarray is a contiguous, non empty sequence of elements within an array.

Constraints:

  • 11 \leq nums.length 2 ...