题解 | #提取不重复的整数#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void (async function () {
    while ((line = await readline())) {
        //拆分为数组，反转数组
        const data = line.split("").reverse();
        //借助Set特性去重，拼接字符串
        const newData = [...new Set(data)].join("");
        console.log(newData);
    }
})();