题解 | #提取不重复的整数#
提取不重复的整数
http://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
let input = readline().split('').reverse()
let resultArr = new Set(input)
let newArr = [...resultArr]
console.log(newArr.join(''))
新手,准备面试,好烦呀,好多api都忘记