题解 | #提取不重复的整数#20220730
提取不重复的整数
https://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); int num=scanner.nextInt(); char [] chars=Integer.toString(num).toCharArray(); String str=""; for (int i=chars.length-1;i>=0;i--){ if (!str.contains(chars[i]+"")){ str += chars[i]; } } //避免位数为0 if (Integer.valueOf(str)%10==0){ System.out.println(Integer.valueOf(str)/10); return; } System.out.println(Integer.valueOf(str)); } }