摘要：最近做的题记录下。 258. Add Digits Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num 阅读全文

摘要：下面是今天写的几道题： 292. Nim Game You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of you take t 阅读全文