题解 | #提取不重复的整数#
提取不重复的整数
https://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
const readline = require('readline');
const rl = readline.createInterface({
input: process.stdin,
output: process.stdout
});
rl.on('line', function (line) {
const nums = line.split('').reverse();
const uniqueNums = nums.filter((value, index) => nums.indexOf(value) === index);
console.log(uniqueNums.join(''));
});