题解 | #字符串加密#

import java.util.*;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String str1 = sc.nextLine();
        String str2 = sc.nextLine();
        char[] arr1 = str1.toCharArray();
        char[] arr2 = str2.toCharArray();
        LinkedHashSet<Character> set = new LinkedHashSet<Character>();
        for(int i=0;i<arr1.length;i++){
            set.add(arr1[i]);
        }
        for(int i=0;i<26;i++){
            set.add((char)('a' + i));
        }
        
        ArrayList<Character> list = new ArrayList<Character>(set);
        StringBuilder sb = new StringBuilder();
        for(int i=0;i<arr2.length;i++){
            if(arr2[i] >= 'a' && arr2[i] <= 'z'){
                sb.append(list.get(arr2[i]-'a'));
            }
        }
        
        System.out.println(sb.toString());
    }
}