题解 | #提取不重复的整数#
提取不重复的整数
https://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
Scanner sc = new Scanner(System.in);
Set set = new LinkedHashSet<>(); //set具有去重功效
int num = sc.nextInt();
String s1 = String.valueOf(num); //将int类型转换成String
String s2[] = s1.split(""); //将String转换成数组形式
for(int i=s2.length-1;i>=0;i--) //倒顺序输出
set.add(s2[i]);
for(Object s:set)
System.out.print(s);
