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摘要： 问题：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 turns to remove 1 to 3 s 阅读全文

摘要： 从今天开始，每天刷一道leetcode。 今天的题目很简单：Given a non negative integer number num. For every numbers i in the range 0 ≤ i ≤ num calculate the number of 1's in the 阅读全文