2013年7月11日
leetcode -- Letter Combinations of a Phone Number
摘要： 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", &q 阅读全文
posted @ 2013-07-11 23:22 feiling 阅读(315) 评论(0) 推荐(0) 编辑