Leetcode 17 - 相关文章

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[LeetCode] 17. Letter Combinations of a Phone Number 电话号码的字母组合

Given a string containing digits from 2-9inclusive, 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. E…

Java实现 LeetCode 17 电话号码的字母组合

17. 电话号码的字母组合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. 给出数字到字母的映射如下(与电话按键相同).注意 1 不对应任何字母. 示例: 输入:"23" 输出:["ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf"].…

[leetcode 17]Letter Combinations of a Phone Number

1 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:Digit string "23" Output: ["ad", "ae&quo…

LeetCode——17. Letter Combinations of a Phone Number

一.题目链接: https://leetcode.com/problems/letter-combinations-of-a-phone-number/ 二.题目大意: 给定一段数字字符串,其中每个数字字符对应了如下的字母字符,求出输入字符串对应的所有可能的字母字符串集合. 例如,输入数字字符串"23",其对应的所有可能的字母字符串集合为 ["ad", "ae", "af", "bd", "be&…

LeetCode 17 Letter Combinations of a Phone Number （电话号码字符组合）

题目链接 https://leetcode.com/problems/letter-combinations-of-a-phone-number/?tab=Description HashMap<Character, String> map = new HashMap<>(); map.put("); map.put("); map.put(', "abc"); map.put(', "def"); map.put(',…

[LeetCode] 17. 电话号码的字母组合 ☆☆☆(回溯) ###

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. 给出数字到字母的映射如下(与电话按键相同).注意 1 不对应任何字母. 示例: 输入:"23"输出:["ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf"].说明:尽管上面的答案是按字…

Leetcode 17. Letter Combinations of a Phone Number(水)

17. Letter Combinations of a Phone Number Medium 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 buttons) is given…