[LeetCode] Valid Phone Numbers 验证电话号码

Given a text file file.txt that contains list of phone numbers (one per line), write a one liner bash script to print all valid phone number...

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

Given a digit string, return all possible letter combinations that the number could represent. A mapping of digit to letters (just like on the telepho...

LeetCode 17 Letter Combinations of a Phone Number(电话号码的字母组合)

翻译 给定一个数字字符串,返回所有这些数字可以表示的字母组合。 一个数字到字母的映射(就像电话按钮)如下图所示。 输入:数字字符串“23” 输出:["ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf"] 备注:尽管以上答案是无序的,如果你想的话你的...

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