题解 | #二进制中1的个数#
二进制中1的个数
http://www.nowcoder.com/practice/8ee967e43c2c4ec193b040ea7fbb10b8
class Solution {
public:
int NumberOf1(int n) {
int res = 0;
int mark = 0x01;
while(mark != 0){
if(mark & n){
res++;
}
mark <<= 1;
}
return res;
}
};
