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 () {
    // Write your code here
    let arr = [];
    while (line = await readline()) {
        for (let i = line.length - 1; i >= 0; i--) {
            if (!arr.includes(line[i])) {
                arr.push(line[i]);
            }
        }
        let ret = '';
        for(let item of arr){
            ret+=item;
        }
        console.log(parseInt(ret))
    }

}()