Letter Combinations of a Phone Number

Letter Combinations of a Phone Number - LeetCode Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com 1. DFS class Solution(object): def letterCombinations(self, digits): dict1 = {2: ["a", "b", "c"], 3: ["d", "e", "f"], 4: ["g", "h", "i"], 5: ["j", "k", "l"], 6: ["m", "n", "o"], 7: ["p", "q", "r..