题解 | #密码翻译# Java实现

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);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
            String s = in.nextLine();
            StringBuilder builder = new StringBuilder();
            for(int i = 0;i < s.length();i++){
                char ch = s.charAt(i);
                //System.out.println("ch = "+ch);
                if(Character.isLetter(ch)){
                    char c = ' ';
                    if(ch == 'z'){
                        c = 'a';
                    }else if(ch == 'Z'){
                        c = 'A';
                    }else{
                        c = (char)(ch+1);
                    }
                    builder.append(c);
                }else{
                    builder.append(ch);
                }
            }
            System.out.println(builder.toString());
        }
    }
}