Leet Code 136. Single Number

https://leetcode.com/problems/single-number/

Example 1:

Input: nums = [2,2,1]
Output: 1

package pep.Day63;

public class LeetCode_136_Single_Number {
    public static void main(String[] args) {
        System.out.println(singleNumber(new int[]{2, 2, 1}));
    }

    public static int singleNumber(int[] nums) {
        int ans = 0;

        for (int i : nums) {
            ans = ans ^ i;
        }

        return ans;
    }
}