基础练习 字符串对比

 1 import java.text.DecimalFormat;
 2 import java.text.NumberFormat;
 3 import java.util.ArrayList;
 4 import java.util.Scanner;  
 5 
 6     public class Main{   
 7         public static void main(String[] args){  
 8             Scanner input = new Scanner(System.in);
 9             String a = input.next();
10             String b = input.next();
11             if(a.equals(b)){
12                 System.out.println("2");
13             }else if(a.length()==b.length()){
14                 if(a.toUpperCase().equals(b.toUpperCase())){
15                     System.out.println("3");
16                 }else{
17                     System.out.println("4");
18                 }
19             }else{
20                 System.out.println("1");
21             }
22         }
23  }