题解 | #查找兄弟单词#

const readline = require("readline");

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});

rl.on("line", function (line: string) {
    const lines = line.split(" ");
    const k = parseInt(lines[lines.length - 1]);
    const x = lines[lines.length - 2];
    const dictionary: string[] = [];
    lines.forEach((item, index) => {
        if (
            index !== 0 &&
            index !== lines.length - 1 &&
            index !== lines.length - 2
        ) {
            dictionary.push(item);
        }
    });

    const brothers: string[] = [];
    dictionary.forEach((item) => {
        if (isBrother(x, item)) {
            brothers.push(item);
        }
    });

    console.log(brothers.length);
    if (k <= brothers.length) {
        console.log(brothers.sort()[k - 1]);
    }
});

// 是否兄弟单词
const isBrother = (x: string, char: string): boolean => {
    if (x.length !== char.length || x === char) {
        return false;
    }
    const sortX = x.split("").sort().join("");
    const sortChar = char.split("").sort().join("");
    return sortX === sortChar;
};