Function initMemo

javascript/0494-target-sum.js:57–62

(nums, total)

};

var initMemo = (nums, total) =>
    new Array(nums.length)
        .fill() /* Time O(N) | Space O(N) */
        .map(() =>
            new Array((total + 1) << 1).fill(null),
        ); /* Time O(M) | Space O(M) */

const calculate = (
    nums,