Function initMemo

javascript/0097-interleaving-string.js:90–95

(s1, s2)

};

var initMemo = (s1, s2) =>
    new Array(s1.length)
        .fill() /* Time O(N) | Space O(N) */
        .map(() =>
            new Array(s2.length).fill(null),
        ); /* Time O(M) | Space O(M) */

var dfs = (s1, s2, s3, i, j, k, memo) => {
    const left =