JAVA String - Reverse Words [ZOHO]

A string S is passed as the input. The program must reverse the order of the words in the string and print them as the output.

Input Format:
The first line will contain S.

Output Format:
The first line will contain the words in the string S in the reverse order.

Boundary Conditions:
Length of S is from 5 to 100.

Example Input/Output 1:
Input:
Today is Friday

Output:
Friday is Today

Example Input/Output 2:
Input:
five six ten eleven

Output:
eleven ten six five

Java Program:

 import java.util.*;

public class Hello {

public static String reverseWords(String s) {

if (s == null || s.length() == 0) {

return "";

}

 

String[] arr = s.split(" ");

StringBuilder sb = new StringBuilder();

for (int i = arr.length - 1; i >= 0; --i) {

if (!arr[i].equals("")) {

sb.append(arr[i]).append(" ");

}

}

return sb.length() == 0 ? "" : sb.substring(0, sb.length() - 1);

}

public static void main(String args[])

{

    Scanner sc=new Scanner(System.in);

    String s=sc.nextLine();

    System.out.println(reverseWords(s));

}

}