index.js

var twoSum = function(nums, target) {
    
    for (let i = 0; i < nums.length; i++){
        for (let j = 0; j < nums.length; j++){
            if(nums[i] + nums[j] == target && i !=j) {
                return [nums[i], nums[j]];
            }
        }
    }
};

j = i + 1