Function initMemo

javascript/0072-edit-distance.js:96–101

(word1, word2)

};

var initMemo = (word1, word2) =>
    new Array(word1.length)
        .fill() /* Time O(N) | Space O(N) */
        .map(() =>
            new Array(word2.length).fill(-1),
        ); /* Time O(N) | Space O(N) */

var dfs = (word1, word2, i, j, memo) => {
    const isEqual = word1[i] === word2[j];