number of 1's in binary
Question:
Input an integer and output the number of 1s in the binary representation of the number. Negative numbers are represented in complement.
Code:
package com.hlq.test;
/**
* @author helongqiang
* @date 2020/5/13 21:56
*/
/**
* 输入一个整数，输出该数二进制表示中1的个数。其中负数用补码表示。
*/
public class Solution {
public int NumberOf1(int n){
int count = 0;
while(n != 0){
count++;
n = n&(n-1);
}
return count++;
}
}