Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in Go

Solution: Subarray Sum Equals K

Explore how to determine the total number of subarrays whose sum equals a target value k by using prefix sums and hash maps. Learn to implement an O(n) time complexity solution, track prefix sums efficiently, and count valid subarrays in a single pass through the array.

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:

  • 1≤1 \leq nums.length ≤2×104\leq 2 \times 10^4

  • −1000≤-1000 \leq ...