链接:leetcode-cn.com/problem 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 解法一:最容易想到的,就是将数字拆开逐个组合,进行循环。 class Solution: def letterCombinations(self, digits: str) -> List[str]: dict_map = {'2': ['a', 'b', 'c'], '3': ['d', 'e'...
17.电话号码的字母组合 题目链接:leetcode-cn.com/problem 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...
LeetCode17.电话号码的字母组合 JavaScript LeetCode17.电话号码的字母组合 JavaScript 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”......
Problem:Given an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in the array which gives the sum of target. Note: Elements in a quadruplet (a,b,c,d) must be in non-descending order. (ie,a≤b≤c≤d) The solution set m...
LeetCode#17 Letter Combinations of a Phone Number Problem Definition: 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....
leetcode: 17. Letter Combinations of a Phone Number 其他 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" # Outp...
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leetcode: 17. Letter Combinations of a Phone Number 其他 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" # Outp...
17. Letter Combinations of a Phone Number Problem's Link --- Mean: 给你一个数字串,输出其在手机九宫格键盘上的所有可能组合. analyse: 使用进位思想来枚举所有组合即可. Time complexity: O(N) view code /** * --- * Copyright (c) 2016...
leetcode 17:letter-combinations-of-a-phone-number 递归方法解决 动态规划 leetcode 70: climbing-stairs: 解题思路爬第n个楼梯的方法是爬第n-1和第n-2的方法和,因为一次或者爬一格,或者爬2格 leetcode 64: 维护一个二维的 dp 数组,其中 dp[i][j] 表示到达当前位置的最小路径和。接下来找状态转移方程,...