2302. Count Subarrays With Score Less Than K | Leetcode Daily 28 April 2025 | Java | Hindi скачать в хорошем качестве

2302. Count Subarrays With Score Less Than K | Leetcode Daily 28 April 2025 | Java | Hindi

"2302. Count Subarrays With Score Less Than K" is a hard-level problem and the LeetCode daily challenge (POTD) for 28 April 2025. The solution, written in Java, is explained with a dry-run on a blackboard, making it accessible to viewers with diverse programming backgrounds by focusing on the logic rather than language-specific details. Intuition: We are given an array and asked to count the number of subarrays where the score (defined as the sum of elements times the length of the subarray) is strictly less than k. A naive solution would check every subarray, but that would be too slow. Instead, we use a sliding window approach. As we move the right pointer across the array, we keep adding nums[right] to a running sum. If at any point the score of the window becomes too large (i.e., sum * window length ≥ k), we move the left pointer forward and shrink the window until the score condition is satisfied again. At every position right, once we have a valid window ([left, right]), all subarrays ending at right and starting anywhere from left to right are valid. The number of such subarrays is simply (right - left + 1), which we add to our answer. This efficient method ensures we process each element only a few times, leading to an overall O(n) solution that's perfect even for large input sizes. Link to the problem: https://leetcode.com/problems/count-s... Link to the Java Code: https://github.com/AditiChourasia/Lee... For doubts/queries, please reach out on [email protected] Connect with me on Linkedin:   / aditi-chourasia-a2a572121   Other problems for practice:    • 3392. Count Subarrays of Length Three With...      • 2444. Count Subarrays With Fixed Bounds | ...      • 2845. Count of Interesting Subarrays | Lee...      • 2799. Count Complete Subarrays in an Array...      • 1399. Count Largest Group | Leetcode Daily...      • 2145. Count the Hidden Sequences | Leetcod...      • 781. Rabbits in Forest | Leetcode Daily (P...      • 2342. Max Sum of a Pair With Equal Sum of ...   #leetcodejava #leetcode #dailychallenge #potd #hindi