题解 | 字符串加密

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String str = in.next();
        String sindex = in.next();
        List<Character> list = new ArrayList<>();
        for (int i = 0; i < str.length(); i++) {
            char c = str.charAt(i);
            if (!list.contains(c)) {
                list.add(c);
            }
        }
        String str1 = "abcdefghijklmnopqrstuvwxyz";
        char[] charArray = str1.toCharArray();
        for (int i = 0; i < charArray.length; i++) {
            if (!list.contains(charArray[i])) {
                list.add(charArray[i]);
            }
        }
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < sindex.length(); i++) {
            char c = sindex.charAt(i);
            sb.append(list.get(c - 'a'));
        }
        System.out.println(sb.toString());
    }
}