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
});
rl.on('line', function (line:string) {
    console.log(parseInt(line).toString(2).split('').filter(item => item ==='1').length)
});