hdu 1013 Digital Roots 用一个大水题来纪念我进入杭电前一万名
The digital root of a positive integer is found by summ … 阅读更多
The digital root of a positive integer is found by summ … 阅读更多
先搞一张电话数字和字符的对应表,,再针对给定电话号码DFS回溯 package Level3;import j … 阅读更多
problem: Given a digit string, return all possible lett … 阅读更多
题目链接:letter-combinations-of-a-phone-number import java. … 阅读更多