void swap(int &a, int &b) { a ^= b;//a = (a^b) b ^= a;//b = b^(a^b)=0^a=a a ^= b;//a = (a^b)^a=b }
posted on 2015-03-26 15:42 jec 阅读(226) 评论(0) 编辑 收藏 举报
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