In this video, you'll learn a very important DSA Interview Question, it is also Leetcode 974 problem called the Subarray sums divisible by K. We discuss the problem count subarrays with sum divisible by K using hashmaps in java. In this problem,
1. You are given an array of integers(arr) and a number K.
2. You have to find the count of subarrays whose sum is divisible by K.

LeetCode Problem 974, Given an array of integer nums and an integer k, return the total number of continuous subarrays whose sum is divisible by k. We can use both the Brute Force Approach
and Hash Table Approach.

We will understand all the possible approaches and also code along in c++, java, and python. This is a common DSA problem and is asked in college placements and in major job interviews. The practice questions and notes are given below, feel free to ask your doubts and practice the given questions!

Link to practice this problem: [ Ссылка ]

Link to notes developed in the video: [ Ссылка ]

Link to practice questions:
1. Longest subarray sum divisible by K: [ Ссылка ]
2. Subarray Sum Equals K: [ Ссылка ]

Timestamps:
00:00 Introduction
00:57 Problem Description
02:29 Observations for an optimized solution
05:20 Dry run
08:22 How to handle negative remainders
12:19 Pseudocode
16:39 Time and space complexity
17:18 Practice Questions

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