Skip to content

1442. Count Triplets That Can Form Two Arrays of Equal XOR #275

Answered by mah-shamim
mah-shamim asked this question in Q&A

You must be logged in to vote

The problem asks us to count the number of triplets (i, j, k) where the XOR of elements between i and j-1 (inclusive) equals the XOR of elements between j and k (inclusive) in the given array arr.

The XOR operation is a bitwise operation where each bit is evaluated independently, and the result is 1 if the corresponding bits in the operands are different, and 0 if they are the same.

Key Points:

  • We are given an array of integers arr.
  • We need to find triplets (i, j, k) such that the XOR of elements from index i to j-1 equals the XOR of elements from index j to k.
  • The XOR operation has some important properties, such as x ^ x = 0 and x ^ 0 = x, which can help optimize the solution.

Approach:

Replies: 1 comment 2 replies

You must be logged in to vote
2 replies
@basharul-siddike

@mah-shamim

mah-shamim Jan 21, 2025
Maintainer Author

Answer selected by basharul-siddike
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Category
Q&A
Labels
question Further information is requested medium Difficulty
2 participants