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temp = n & -n; 是啥意思呀？？？

Posted by zsc08_wangqiang at 2010-08-02 15:58:26 on Problem 2309
In Reply To:同样是位操作 Posted by:yizer at 2009-01-04 04:44:19 
temp = n & -n;
是啥意思呀？？？？？
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