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我做矩阵乘法的时候是先枚举一个矩阵a的第i行第j列，如果a[i][j]=0的话，下面的一层循环就可以不要了。In Reply To:可是你的程序运行时间明显比我短很多哎，有什么特殊优化么？ Posted by:Ikki at 2009-05-17 18:52:29 Followed by:
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