{ "data": { "question": { "questionId": "1553", "questionFrontendId": "1442", "boundTopicId": null, "title": "Count Triplets That Can Form Two Arrays of Equal XOR", "titleSlug": "count-triplets-that-can-form-two-arrays-of-equal-xor", "content": "

Given an array of integers arr.

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We want to select three indices i, j and k where (0 <= i < j <= k < arr.length).

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Let's define a and b as follows:

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Note that ^ denotes the bitwise-xor operation.

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Return the number of triplets (i, j and k) Where a == b.

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Example 1:

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\nInput: arr = [2,3,1,6,7]\nOutput: 4\nExplanation: The triplets are (0,1,2), (0,2,2), (2,3,4) and (2,4,4)\n
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Example 2:

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\nInput: arr = [1,1,1,1,1]\nOutput: 10\n
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Constraints:

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