0136 Single Number

Question

My Solution:

A ⊕ A = 0 B ⊕ 0 = B A ⊕ A ⊕ B = B

class Solution {
    public int singleNumber(int[] nums) {
        for(int i = 0; i < nums.length - 1; i++){
            nums[i+1] ^= nums[i];
        }

        return nums[nums.length - 1];
    }
}