Mediumhash-tables
Subarray Sum Equals K
TIME: O(n)
SPACE: O(n)
Problem Statement
Given an array of integers nums and an integer k, return the total number of subarrays whose sum equals to k.
Real Engineering Applications
In production systems, this concept directly maps to caching index layers, route lookups optimizations, compiler scope parsing validations, and multi-thread dependency schedulers.
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solution.js
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