题解 | #简单密码#

import java.util.*;

public class Main{
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);

        StringBuilder stringBuilder = new StringBuilder();

        String str = sc.nextLine();
        str = str.replaceAll("([a|b|c])","2");
        str = str.replaceAll("([d|e|f])","3");
        str = str.replaceAll("([g|h|i])","4");
        str = str.replaceAll("([j|k|l])","5");
        str = str.replaceAll("([m|n|o])","6");
        str = str.replaceAll("([p|q|r|s])","7");
        str = str.replaceAll("([t|u|v])","8");
        str = str.replaceAll("([w|x|y|z])","9");

        for (int i = 0; i < str.length(); i++) {
            if (str.charAt(i) >= 'A' && str.charAt(i) <= 'Y'){
                stringBuilder.append((char)(str.charAt(i) + 32 + 1));
            }else if (str.charAt(i) == 'Z'){
                stringBuilder.append('a');
            }else
                stringBuilder.append(str.charAt(i));
        }
        System.out.println(stringBuilder);
    }
}