{ "data": { "question": { "questionId": "1435", "questionFrontendId": "1310", "boundTopicId": null, "title": "XOR Queries of a Subarray", "titleSlug": "xor-queries-of-a-subarray", "content": "

You are given an array arr of positive integers. You are also given the array queries where queries[i] = [lefti, righti].

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For each query i compute the XOR of elements from lefti to righti (that is, arr[lefti] XOR arr[lefti + 1] XOR ... XOR arr[righti] ).

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Return an array answer where answer[i] is the answer to the ith query.

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Example 1:

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\nInput: arr = [1,3,4,8], queries = [[0,1],[1,2],[0,3],[3,3]]\nOutput: [2,7,14,8] \nExplanation: \nThe binary representation of the elements in the array are:\n1 = 0001 \n3 = 0011 \n4 = 0100 \n8 = 1000 \nThe XOR values for queries are:\n[0,1] = 1 xor 3 = 2 \n[1,2] = 3 xor 4 = 7 \n[0,3] = 1 xor 3 xor 4 xor 8 = 14 \n[3,3] = 8\n
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Example 2:

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\nInput: arr = [4,8,2,10], queries = [[2,3],[1,3],[0,0],[0,3]]\nOutput: [8,0,4,4]\n
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Constraints:

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