题解 | #字符串加解密#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            String origin = sc.nextLine();
            String encrypt = sc.nextLine();
            StringBuilder decryptBuilder = new StringBuilder();
            StringBuilder encryptBuilder = new StringBuilder();
            for (char c : origin.toCharArray()) {
                if (c == 'z') {
                    c = 'A';
                } else if (c == 'Z') {
                    c = 'a';
                } else if (c == '9') {
                    c = '0';
                }else if (Character.isLowerCase(c)) {
                    c = (char) (c - 31);
                } else if (Character.isUpperCase(c)) {
                    c = (char) (c + 33);
                } else if (Character.isDigit(c)) {
                    c = (char) (c + 1);
                }
                decryptBuilder.append(c);
            }
            System.out.println(decryptBuilder);
            for (char c : encrypt.toCharArray()) {
                if (c == 'A') {
                    c = 'z';
                }else if (c == 'a') {
                    c = 'Z';
                }else if (c == '0') {
                    c = '9';
                }else if (Character.isLowerCase(c)) {
                    c = (char) (c - 33);
                }else if (Character.isUpperCase(c)) {
                    c = (char) (c + 31);
                }else if (Character.isDigit(c)) {
                    c = (char) (c - 1);
                }
                encryptBuilder.append(c);
            }
            System.out.println(encryptBuilder);
        }
        sc.close();
    }
}