Solution: Subarray Sum Equals K
Explore how to determine the total number of contiguous subarrays whose sum equals a target k using prefix sums and hash maps. This lesson helps you understand a one-pass solution with O(n) time and space, applying hash maps to track prefix sums and count valid subarrays efficiently.
We'll cover the following...
We'll cover the following...
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:
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