题解 | #求int型正整数在内存中存储时1的个数#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void async function () {
    // Write your code here
    var num=await readline()
    var num2=parseInt(num).toString(2)
    var arr=(num2.split('')).filter(x=>x==1)
    console.log(arr.length)
}()