136. Single Number

Given an array of integers, every element appears twice except for one. Find that single one.
Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?

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