打印正确的输出

Question

我写了这个程序，重点是打印出正确的中间字....什么代码，使它打印出正确的中间字？

import java.util.Scanner; //The Scanner is in the java.util package. 

public class MiddleString { 
public static void main(String [] args){ 
Scanner input = new Scanner(System.in); //Create a Scanner object. 

String str1, str2, str3; 

System.out.println("Enter the first word: "); //Prompt user to enter the first word 
str1=input.next(); //Sets "str1" = to first word. 
System.out.println("Enter a second word: "); // Prompt user to enter the second word 
str2=input.next(); //Sets "str2" = to second word. 
System.out.println("Enter a third word: "); // Prompt user to enter the third word   
str3=input.next(); //Sets "str3" = to third word. 


if((str1.compareTo(str3) < 0) && (str1.compareTo(str2) <0) && (str2.compareTo(str3) <0)) 
System.out.println(str2); 

else if ((str3.compareTo(str1) <0) && (str1.compareTo(str2) <0) && (str3.compareTo(str2) <0)) 
System.out.println(str1); 

else if ((str1.compareTo(str2) <0) && (str3.compareTo(str2) <0) && (str1.compareTo(str3) <0)) 
System.out.println(str3); 


System.out.println("The middle word is " ); // Outputs the middle word in alphabetical order. 

} 
} 

Answer 1

您可以创建一个数组String[]，排序，并打印中间值：

String[] strings = { str1, str2, str3 }; 
Arrays.sort(strings); 

System.out.println(strings[1]); 

Answer 2

你可以使用一个名为outputString其他字符串和不同于if语句可以str的赋值1，2或3所以请按照下面的代码

String outputString =""; 
if((str1.compareTo(str3) < 0) && (str1.compareTo(str2) <0) && (str2.compareTo(str3) <0)){ 
System.out.println(str2); 
outputString=str2 ; 
} 

else if ((str3.compareTo(str1) <0) && (str1.compareTo(str2) <0) && (str3.compareTo(str2) <0)){ 
System.out.println(str1); 
outputString=str1 ; 
} 
else if ((str1.compareTo(str2) <0) && (str3.compareTo(str2) <0) && (str1.compareTo(str3) <0)){ 
System.out.println(str3); 
outputString=str3 ; 
} 


System.out.println("The middle word is " +outputString);