LeetCode 3187 | Peaks in Array | Weekly Contest 402 | #leetcodecontest #weeklycontest #programming

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.

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🔗 Related Links and Resources:

LeetCode Weekly Contest 402
Problem Link on LeetCode (https://leetcode.com/problems/peaks-in-array/description/)

Check out the source code on GitHub: https://github.com/algohorizon1/leetcode/tree/main/Contest/Weekly402/3187

LeetCode Daily Challenge - https://youtube.com/playlist?list=PLHz3oB14Z2dOZPyB5t7RvXbmMikI2ZOFI&si=4rzKrlfTWHujqTAj

LeetCode Contest - https://youtube.com/playlist?list=PLHz3oB14Z2dNJBmlAIsdQajLOzpOknvjC&si=MzlvP7L-jbOMJzeh

LeetCode Problem Solutions - https://youtube.com/playlist?list=PLHz3oB14Z2dPDnm5mpyCPXVqTy9vU2YmO&si=vnRurnDGQiErODtY

LeetCode Top Interview 150 - https://www.youtube.com/playlist?list=PLHz3oB14Z2dMNvlkOXwsWQ1oZ0ugAkDZk

Tags:
#leetcode #leetcodedailychallenge #arrays #arraysinjava
#dsa #problemsolving #interviewpreparation #java #datastructures #datastructuresandalgorithms #coding #programming #weeklycontest

Thank you for watching and happy coding! 😊

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Видео LeetCode 3187 | Peaks in Array | Weekly Contest 402 | #leetcodecontest #weeklycontest #programming канала Algo Horizon