/**

* @param {number[]} nums

* @param {number} target

* @return {number[]}

*/

const numArrOne = [2, 7, 11, 8, 14, 6], targetOne = 9; // [0, 1]

const numArrTwo = [3, 4, 2, 8, 15, 20], targetTwo = 6; // [1, 2]

const numArrThree = [16, 22, 7, 4, 8], targetThree = 12; // [3, 4]

const numArrFour = [2, 5, 5, 6, 11], targetFour = 10; // [1, 2]

const numArrFive = [3, 3], targetFive = 6; // [0, 1]

// missing duplicate index check

const twoSum = (nums, target) => {

const out = [];

for (let i = 0; i < nums.length; i++) {

let dif = target - nums[i];

if (nums.includes(dif)) {

out.push(i, nums.indexOf(dif));

return out;

}

}

};

console.log('numArrOne', twoSum(numArrOne, targetOne));

console.log('numArrTwo', twoSum(numArrTwo, targetTwo));

console.log('numArrThree', twoSum(numArrThree, targetThree));