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LeetCode 3187 | Peaks in Array | Weekly Contest 402 |

Hello friends! In this video, we'll explore how to solve a problem involving peaks in an array and handling two types of queries efficiently. A peak in an array is an element that is greater than its previous and next element. Problem Description: Given, an integer array nums and a 2D integer array queries We need to process the following types of queries: queries[i] = [1, li, ri]: Determine the count of peak elements in the subarray nums[li..ri]. queries[i] = [2, indexi, vali]: Change the value of nums[indexi] to vali. Our goal is to return an array containing the results of the queries of the first type in order. Notes: The first and the last element of an array or a subarray cannot be a peak. Example: Input: nums = [3,1,4,2,5], queries = [[2,3,4],[1,0,4]] Output: [0] Watch the video to understand the detailed implementation and see the code in action! 🚀 By the end of this video, you'll have a comprehensive understanding of how to approach and solve this problem effectively. If you find this video helpful, please like, share, and subscribe to support the channel. Your feedback is valuable, so feel free to comment if you have any questions or suggestions. 🔗 Related Links and Resources: LeetCode Weekly Contest 402 Problem Link on LeetCode (https://leetcode.com/problems/peaks-i...) Check out the source code on GitHub: https://github.com/algohorizon1/leetc... LeetCode Daily Challenge -    • LeetCode Daily Challenge   LeetCode Contest -    • LeetCode Contest   LeetCode Problem Solutions -    • LeetCode Problem Solutions   LeetCode Top Interview 150 -    • LeetCode Top Interview 150   Tags: #leetcode #leetcodedailychallenge #arrays #arraysinjava #dsa #problemsolving #interviewpreparation #java #datastructures #datastructuresandalgorithms #coding #programming #weeklycontest Thank you for watching and happy coding! 😊 Music I use: https://www.bensound.com License code: ZHZCGWXPWFJEOVSU