leetcode第18题--Letter Combinations of a Phone Number

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leetcode第18题--Letter Combinations of a Phone Number

Problem: 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&…

LeetCode （17）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:Digit string "23" Output: ["ad", "ae",…

leetcode个人题解——#17 Letter Combinations of a Phone Number

思路:用深搜遍历九宫格字符串,一开始做的时候发生了引用指向空地址的问题,后来发现是vector不能直接=赋值. class Solution { public: int len; ]={"abc", "def", "ghi", "jkl", "mno", "pqrs", "tuv", "wxyz"}; void search(int pos, st…

LeetCode（17）Letter Combinations of a Phone Number

题目如下: Python代码: class Solution(object): def letterCombinations(self, digits): """ :type digits: str :rtype: List[str] """ if not digits: return [] dic = {':'wxyz'} result = [] self.helper(digits,dic,0,"",result) ret…

乘风破浪：LeetCode真题_017_Letter Combinations of a Phone Number

乘风破浪:LeetCode真题_017_Letter Combinations of a Phone Number 一.前言如何让两个或者多个集合中的随机挑选的元素结合到一起,并且得到所有的可能呢?我们可能事先并不知道会用到哪几个集合,因此我们可以通过递归方法来解决. 二.Letter Combinations of a Phone Number 2.1 问题 2.2 分析和解决通过上面的题目,我们基本上可以理解题意了,但是我们要怎么去处理呢,这个时候就需要用到递归算法了. public c…

LeetCode解题报告—— Container With Most Water & 3Sum Closest & Letter Combinations of a Phone Number

1. Container With Most Water Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and (i, 0). Find two lines, which togethe…

[LeetCode][Python]17: Letter Combinations of a Phone Number

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com' 17: Letter Combinations of a Phone Numberhttps://oj.leetcode.com/problems/letter-combinations-of-a-phone-number/ Given a digit string, return all possible letter combinations that the numbe…