题解 | #提取不重复的整数#
提取不重复的整数
http://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
const readline = require('readline')
var rl = readline.createInterface({
input:process.stdin,
output:process.stdout
})
var str = ''
rl.on('line',(line)=>{
str = line
})
rl.on('close',()=>{
var arr = str.split('')
var s = new Set(arr.reverse())
var arr2 = [...s]
console.log(arr2.join(''))
})
