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)
} 
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