{ "data": { "question": { "questionId": "1913", "questionFrontendId": "1787", "boundTopicId": null, "title": "Make the XOR of All Segments Equal to Zero", "titleSlug": "make-the-xor-of-all-segments-equal-to-zero", "content": "

You are given an array nums​​​ and an integer k​​​​​. The XOR of a segment [left, right] where left <= right is the XOR of all the elements with indices between left and right, inclusive: nums[left] XOR nums[left+1] XOR ... XOR nums[right].

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Return the minimum number of elements to change in the array such that the XOR of all segments of size k​​​​​​ is equal to zero.

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Example 1:

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\nInput: nums = [1,2,0,3,0], k = 1\nOutput: 3\nExplanation: Modify the array from [1,2,0,3,0] to from [0,0,0,0,0].\n
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Example 2:

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\nInput: nums = [3,4,5,2,1,7,3,4,7], k = 3\nOutput: 3\nExplanation: Modify the array from [3,4,5,2,1,7,3,4,7] to [3,4,7,3,4,7,3,4,7].\n
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Example 3:

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\nInput: nums = [1,2,4,1,2,5,1,2,6], k = 3\nOutput: 3\nExplanation: Modify the array from [1,2,4,1,2,5,1,2,6] to [1,2,3,1,2,3,1,2,3].
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Constraints:

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