题解 | #简单密码#

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        char[] a = {'2', '2', '2', '3', '3', '3', '4', '4', '4', '5', '5', '5',
                    '6', '6', '6', '7', '7', '7', '7', '8', '8', '8', '9', '9', '9', '9'
                   };
        while (in.hasNext()) {
            String str = in.next();
            String rs="";
            for (int i=0;i<str.length();i++){
                char c = str.charAt(i);
                if(c>='A'&&c<='Z'){
                    c+=33;
                    if(c>'z'){
                        c-=26;
                    }
                }else if(c>='a' && c<='z'){
                    c=a[c-'a'];
                }
                rs+=c;
            }
            System.out.println(rs);
        }
    }
}