// In this approach, we are going to use the concept of the prefix XOR to solve this problem. Here, the prefix XOR of a subarray ending at index i, simply means the XOR of all the elements of that ...
You are given an array arr of positive integers. You are also given the array queries where queries[i] = [lefti, righti]. For each query i compute the XOR of elements from lefti to righti (that is, ...
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