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 num = readline();
// 倒序 const newNum = num.split(''); const newNumArr = []; for(let i=newNum.length-1;i>=0;i--){ newNumArr.push(Number(newNum[i])); } let filterArr = new Set(newNumArr); console.log([...filterArr].join(''))