题解 | #查找输入整数二进制中1的个数#
查找输入整数二进制中1的个数
http://www.nowcoder.com/practice/1b46eb4cf3fa49b9965ac3c2c1caf5ad
let str; while(str = readline()){ let two = parseInt(str).toString(2); let arr = two.split(''); let num = 0; arr.forEach((v)=>{ if(v == '1'){ num++; } }) console.log(num) }