常用小算法

统计一个整数的二进制表示中1的个数的解法

int countOne2(int num)  
{
    
      
    int count = 0;  
    while ( num )  
    {
    
      
        num &= (num - 1) ;  
        ++count;      
    }  
      
    return count;  
}  

中值滤波
https://blog.csdn.net/u013608424/article/details/72865845

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Origin blog.csdn.net/weixin_41874898/article/details/114078273