SOURCE

/**
 * @param {number[]} nums
 * @return {number}
 */
var singleNumber = function(nums) {
    let ans = 0;
    for(const num of nums) {
        ans ^= num;
    }
    return ans;
};


console.log(singleNumber([3,2,2]))



function arr(arrs){
    for(const num of arrs){
        console.log(num)
    }
}