题解 | #查找输入整数二进制中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 valStr1 = Number(line).toString(2);
        let valStr2 = valStr1.replaceAll('1', '');
        console.log(valStr1.length - valStr2.length);
    }
}()