题解 | #查找兄弟单词#

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
    const strs = await readline();
    const list = strs.split(' ');
    const num = +list[0];
    const arr = list.slice(1, 1 + num);
    const x = list[list.length - 2];
    const k = +list[list.length - 1];
    let words = arr.filter(ele=> ele.split('').sort().join('') === x.split('').sort().join('') && ele !== x);
    console.log(words.length);
    if(words.sort()[k - 1]) console.log(words.sort()[k - 1]);
}()