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 sc = new Scanner(System.in);
        String s = sc.next();
        char[] chars = new char[s.length()];
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
if(c>='A'&&c<'Z'){
    chars[i]= (char) (c+33);
}else if (c=='Z'){
    chars[i]='a';
}else
            if(c>='a'&&c<='c'){
                chars[i]='2';
            }else if (c>='d'&&c<='f'){
                chars[i]='3';
            }else if (c>='g'&&c<='i'){
                chars[i]='4';
            }else if (c>='j'&&c<='l'){
                chars[i]='5';
            }else if (c>='m'&&c<='o'){
                chars[i]='6';
            }else if (c>='p'&&c<='s'){
                chars[i]='7';
            }else if (c>='t'&&c<='v'){
                chars[i]='8';
            }else if (c>='w'&&c<='z'){
                chars[i]='9';
            }else {
                chars[i]=c;
            }
        }
        for (int i = 0; i < chars.length; i++) {
            System.out.print(chars[i]);
        }
    }
}