Subarray Sum Equals K. If no such sub-array exists, return 0. The key insight is that we

If no such sub-array exists, return 0. The key insight is that we can find subarrays with sum exactly equal to k by calculating the difference between the count of subarrays with sum at most k and the count of subarrays with sum at most k-1. Intuitions, example walk through, and complexity analysis. A **subarray** is a contiguous **non-empty** sequence of elements within an array. A **queen** in a chessboard can attack horizontally, vertically, and diagonally. Can you solve this real interview question? Subarray Sum Equals K - Given an array of integers nums and an integer k, return the total number of subarrays whose sum equals to k. Jul 23, 2025 · For each starting element, the inner loop iterates through subsequent elements and adding each element to the cumulative sum until the given sum is found or the end of the array is reached. Count Subarray sum Equals K | Brute - Better -Optimal take U forward 965K subscribers Subscribed Detailed solution for Longest Subarray with given Sum K (Positives) - Problem Statement: Given an array nums of size n and an integer k, find the length of the longest sub-array that sums to k. What is Subarray Sum? The subarray sum is the sum of elements in a subarray. 1 day ago · The most direct solution is to compute every subarray sum.

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