Leetcode Problem 2588. Count the Number of Beautiful Subarrays

2588. Count the Number of Beautiful Subarrays

Leetcode Solutions

Prefix XOR and Counting Beautiful Subarrays

  1. Initialize a counter (hashmap) to keep track of the frequency of prefix XOR values, starting with 0 having a count of 1.
  2. Initialize a variable prefix_xor to 0 (the XOR of an empty subarray).
  3. Initialize a variable result to 0 to store the number of beautiful subarrays.
  4. Iterate over each element in nums: a. Update prefix_xor with the XOR of the current element. b. Add the count of prefix_xor in the counter to result (since each occurrence represents a subarray ending at the current index that can be made beautiful). c. Increment the count of prefix_xor in the counter.
  5. Return result.
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Brute Force with Bit Manipulation

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