import java.util.ArrayList; import java.util.Collections; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); while(sc.hasNext()) { String a = sc.next(); String b = sc.next(); char[] ac = a.toCharArray(); char[] bc = b.toCharArray(); ArrayList<Character> list = new ArrayList<>(); for(int i = 0; i < ac.length; i ++) { for(int j = 0 ; j < bc.length; j ++) { if(ac[i] == bc[j]) { list.add(ac[i]); bc[j] = '0'; break; } } } Collections.sort(list); for(int i = 0; i < list.size(); i ++) { System.out.print(list.get(i)); } System.out.println(); } } } |
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