题解 | #简单密码# 懒人方法

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Scanner sc =new Scanner(System.in);

        String from="abcdefghijklmnopqrstuvwxyz";

        String to=  "22233344455566677778889999";

        String result=new String();

        if(sc.hasNextLine()){

            String s=sc.nextLine();

            int len=s.length();

            for(int i=0;i<len;i++){

                char temp=s.charAt(i);

                int index=from.indexOf(temp);

                if(index!=-1){

                    result+=to.charAt(index);

                }else{

                    if(temp>='A'&&temp<'Z'){

                        temp+=32+1;

                        result+=temp;

                    }else if(temp=='Z'){

                        result+='a';

                    }else{

                        result+=temp;

                    }

                }

            }

        }

        System.out.println(result);

    }

}