以后会更新对应的栈操作实现。 首先放出原题:Letter Combinations of a Phone Number Given a string containing digits from2-9inclusive, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. Note th...
public ArrayList<String> letterCombinations(String digits) { ArrayList<String> ret = new ArrayList<String>(); StringBuilder sb = new StringBuilder(); letterCombinations(digits, 0, sb, ret); return ret; } private void letterCombinations(String digits, int i, StringBuilder sb, ArrayList<String> re...
就当作给自己记下来好了 Given a string containing digits from2-9inclusive, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. Note that 1 does not map to any letters. Example: Input:"23...
题目链接:https://leetcode.com/problems/letter-combinations-of-a-phone-number/ 题目: Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. Input:Digitstring"23"Output:["...
Can you solve this real interview question? Letter Combinations of a Phone Number - Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. Return the answer in any order. A mapping o
Leetcode NO.17 Letter Combinations Of_A_Phone Number 电话号码的字母组合 文章目录 1.问题描述 2.测试用例 示例 1 示例2 示例3 3.提示 4.代码 1.电话号码的字母组合-回溯 code 复杂度 1.问题描述 给定一个仅包含数字 2-9 的字符串,返回所有它能表示的字母组合。答案可以按 任意顺序 返回。给出数字...
Letter Combinations of a Phone Number 一 题目 Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone b...
Can you solve this real interview question? Letter Combinations of a Phone Number - Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. Return the answer in any order. A mapping o
17. Letter Combinations of a Phone Number Runtime: 4 ms, faster than 100.00% of C++ online submissions for Letter Combinations of a Phone Number. Memory Usage: 8.7 MB, less than 62.00% of C++ online submissions for Letter Combinations of a Phone Number. class Solution { public: vector<...
17. Letter Combinations of a Phone Number Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telephone buttons) is given below. Input:Digit string "23"Output: ["ad", "ae", "af", "bd", "be"...