Package g2401_2500.s2425_bitwise_xor_of_all_pairings

Class Solution

  • public class Solution
extends Object
    2425 - Bitwise XOR of All Pairings.

    Medium

    You are given two 0-indexed arrays, nums1 and nums2, consisting of non-negative integers. There exists another array, nums3, which contains the bitwise XOR of all pairings of integers between nums1 and nums2 (every integer in nums1 is paired with every integer in nums2 exactly once ).

    Return the bitwise XOR of all integers in nums3.

    Example 1:

    Input: nums1 = [2,1,3], nums2 = [10,2,5,0]

    Output: 13

    Explanation:

    A possible nums3 array is [8,0,7,2,11,3,4,1,9,1,6,3].

    The bitwise XOR of all these numbers is 13, so we return 13.

    Example 2:

    Input: nums1 = [1,2], nums2 = [3,4]

    Output: 0

    Explanation:

    All possible pairs of bitwise XORs are nums1[0] ^ nums2[0], nums1[0] ^ nums2[1], nums1[1] ^ nums2[0], and nums1[1] ^ nums2[1].

    Thus, one possible nums3 array is [2,5,1,6]. 2 ^ 5 ^ 1 ^ 6 = 0, so we return 0.

    Constraints:

    • 1 <= nums1.length, nums2.length <= 105
    • 0 <= nums1[i], nums2[j] <= 109

    • Constructor Detail

      • Solution

        public Solution()

    • Method Detail

      • xorAllNums

        public int xorAllNums​(int[] nums1,
                      int[] nums2)