位运算
二进制中1的个数
http://www.nowcoder.com/questionTerminal/8ee967e43c2c4ec193b040ea7fbb10b8
public class Solution {
public int NumberOf1(int n) {
int count=0;
while(n!=0) {
count+= n&1;
n=n>>>1;
}
return count;
}
}
