Package g1801_1900.s1835_find_xor_sum_of_all_pairs_bitwise_and

Class Solution

java.lang.Object
g1801_1900.s1835_find_xor_sum_of_all_pairs_bitwise_and.Solution
public class Solution extends Object
1835 - Find XOR Sum of All Pairs Bitwise AND.

Hard

The XOR sum of a list is the bitwise XOR of all its elements. If the list only contains one element, then its XOR sum will be equal to this element.

  • For example, the XOR sum of [1,2,3,4] is equal to 1 XOR 2 XOR 3 XOR 4 = 4, and the XOR sum of [3] is equal to 3.

You are given two 0-indexed arrays arr1 and arr2 that consist only of non-negative integers.

Consider the list containing the result of arr1[i] AND arr2[j] (bitwise AND) for every (i, j) pair where 0 <= i < arr1.length and 0 <= j < arr2.length.

Return the XOR sum of the aforementioned list.

Example 1:

Input: arr1 = [1,2,3], arr2 = [6,5]

Output: 0

Explanation: The list = [1 AND 6, 1 AND 5, 2 AND 6, 2 AND 5, 3 AND 6, 3 AND 5] = [0,1,2,0,2,1]. The XOR sum = 0 XOR 1 XOR 2 XOR 0 XOR 2 XOR 1 = 0.

Example 2:

Input: arr1 = [12], arr2 = [4]

Output: 4

Explanation: The list = [12 AND 4] = [4]. The XOR sum = 4.

Constraints:

  • 1 <= arr1.length, arr2.length <= 105
  • 0 <= arr1[i], arr2[j] <= 109

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • getXORSum

      public int getXORSum(int[] arr1, int[] arr2)