560. Subarray Sum Equals K

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Given an array of integers nums and an integer k, return the total number of subarrays whose sum equals to k. A subarray is a contiguous non-empty sequence of elements within an array. Example 1: Input: nums = [1,1,1], k = 2 Output: 2 Example 2: Input: nums = [1,2,3], k = 3 Output: 2 Constraints: - 1 <= nums.length <= 2 * 104 - -1000 <= nums[i] <= 1000 - -107 <= k <= 107

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solution.cppC++17

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