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
    while(line = await readline()){
        let num=Number(line).toString(2)+""
        let count=0
        for(let i in num){
            if(num[i]==='1'){
                count++
            }
        }
        console.log(count)
    }
}()