题解 | #查找输入整数二进制中1的个数#

const readline = require('readline');

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});
// let arr = []
rl.on('line', function (line) {
    console.log(parseInt(line).toString(2).split('1').length - 1)
    // arr.push(parseInt(line).toString(2))
});
// rl.on('close', () => {
//     arr.forEach(item => {
//         console.log(item.split('1').length - 1)
//     })
// })