题解 | #判断是不是字母#

题解思路

import java.util.Scanner;

public class Main{
    
    public static void main(String[] args){
        Scanner sin = new Scanner(System.in);
        String s = "zxcvbnmasdfghjklqwertyuiop"; // 26个小写字母
        String S = "QWERTYUIOPASDFGHJKLZXCVBNM"; // 26个大写字母
        while(sin.hasNext()){
            String str = sin.next();
            // 字符串的contains方法就是判断改字符是否存在在字符串里面
            if(s.contains(str) || S.contains(str)){ // || 或
                System.out.println(str + " is an alphabet.");
            }else{
                System.out.println(str + " is not an alphabet.");
            }
        }
        
    }
}