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 () {
    const input = parseInt(await readline(), 10);
    const binaryArray = input.toString(2).split("");
    let count = 0;
    binaryArray.forEach(function (element) {
        if (element == 1) {
            count += 1;
        }
    });
    console.log(count);
})();