题解 | #二进制中1的个数#
二进制中1的个数
https://www.nowcoder.com/practice/8ee967e43c2c4ec193b040ea7fbb10b8
public class Solution { public int NumberOf1(int n) { String binNum = Integer.toBinaryString(n); int count = 0; for(int i=0;i<binNum.length();i++){ if(binNum.charAt(i)=='1'){ count++; } } return count; } }