题解 | #求int型正整数在内存中存储时1的个数#

Number值的toString()方法返回表示该数字值的字符串

toString(radix) radix用于指定数字值的基数

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 res = parseInt(line).toString(2)
        let sum = 0
        for(let i of res) {
            if(i == '1') sum++
        }
        console.log(sum)
    }
}()