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
    // 思路：1. 转化为二进制
    //      2. 二进制的数转为数组，找出1的个数
    let line = await readline()
    let arr = Array.from(parseInt(line).toString(2))
    let count = 0
    arr.forEach(ele=>{
        if(ele==1){
            count++
        }
    })
    console.log(count)

}()