Solution: Count Triplets That Can Form Two Arrays of Equal XOR
Explore how to identify triplets in an array where two subarrays have equal XOR values. Understand the use of prefix XOR and hash maps to optimize your solution from cubic to linear time complexity, enhancing your problem-solving skills with bitwise operations.
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Statement
Given an array of integers, arr, we need to find three indices, i, j, and k, such that i j k arr.length.
We define two values, a and b, as follows:
a = arr[i] ^ arr[i + 1] ^ ... ^ arr[j - 1]b = arr[j] ^ arr[j + 1] ^ ... ^ arr[k]
Note: ^ denotes the bitwise XOR operation.
Return the count of triplets (i, j, k) for which a is equal to b.
Constraints:
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