1442. Count Triplets That Can Form Two Arrays of Equal XOR || LeetCode|| Learn To Approach A Proble

The `countTriplets` function in the `Solution` class calculates the number of valid triplets (i, j, k) in an array `arr` where the XOR of elements from index `i` to `j-1` equals the XOR of elements from index `j` to `k`. The function first constructs a prefix XOR array, `prefixXor`, to facilitate quick XOR calculations for any subarray. This array is initialized by copying elements from `arr` and inserting a 0 at the beginning to handle the base case. The prefix XOR values are then computed such that each entry represents the cumulative XOR from the start of the array up to that index. The function iterates over all possible pairs (i, k) and counts the triplets by checking if the prefix XOR values at indices `i` and `k` are equal. If they are equal, the number of valid triplets for that pair is incremented by `k-i-1`, accounting for all possible values of `j` between `i` and `k`. This method effectively reduces the time complexity compared to a naive approach by leveraging the prefix XOR array for efficient subarray XOR computations. Problem Link - https://leetcode.com/problems/count-triplets-that-can-form-two-arrays-of-equal-xor/description/?envType=daily-question&envId=2024-05-30 please comment down your doubts. thank you for watching :) you can reach out me here - https://www.linkedin.com/in/aaanjalisharma/ #BinaryReduction #SlidingWindowAlgorithm #StringManipulation#BinaryOperations #AlgorithmTutorial #LeetCodeSolution #CompetitiveProgramming #ProgrammingInterview #DataStructuresAndAlgorithms #CPlusPlusCoding #BitManipulation #CodeOptimization #CodingInterviewPrep #leetcode #coding #india #problem #problemsolvingstrategies #coding #leetcode #interviewpreparation #india #hindi

Видео 1442. Count Triplets That Can Form Two Arrays of Equal XOR || LeetCode|| Learn To Approach A Proble автора Harvest Haven