题解 | #提取不重复的整数#
提取不重复的整数
https://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
import java.util.Iterator; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); while (in.hasNextLine()) { StringBuilder sb1 = new StringBuilder(in.nextLine()).reverse(); for (int i = 0; i < sb1.length(); i++) { for (int j = i+1; j < sb1.length(); j++) { if(sb1.charAt(j)==sb1.charAt(i)) sb1.setCharAt(j,'x'); } if(sb1.charAt(i)!='x') System.out.print(sb1.charAt(i)); } } in.close(); } }