Reverse words in a given String in Java

Q. To Reverse words in a given String in Java

Input : "Welcome to geeksforgeeks"
Output : "geeksforgeeks to Welcome"

Input : "I love Java Programming"
Output :"Programming Java love I"

===========================================

YouTube video:-

Our code :

Example No.1




import java.util.regex.Pattern;




public class ReverseOfWordPart2 {
 
 static String rev = "";
   public static void main(String[] args) {
      String str = "the sky is blue in india";
  
      System.out.println("The original string is: " + str);
      
      Pattern p = Pattern.compile("\\s");
      
      String[] temp = p.split(str);
      
      
      for (int i = 0; i < temp.length; i++) {
        
            rev = " " + temp[i] + rev;
      }
      System.out.println("The reversed string is: " + rev);
   }
}






O/P 

The original string is: the sky is blue in india

The reversed string is:  india in blue is sky the



=============================================================================


Example No.2





// Java Program to reverse a String // without using inbuilt String function 

 import java.util.regex.Pattern; 
 public class ReverseOfWord { 


  // Method to reverse words of a String 
  static String reverseWords(String str) 
  { 


   // Specifying the pattern to be searched 
   Pattern pattern = Pattern.compile("\\s"); 


   // splitting String str with a pattern 
   // (i.e )splitting the string whenever their 
   // is whitespace and store in temp array. 
   String[] temp = pattern.split(str); 
   String result = ""; 


   // Iterate over the temp array and store 
   // the string in reverse order. 
   for (int i = 0; i < temp.length; i++) { 
    if (i == temp.length - 1) 
     result = temp[i] + result; 
    else
     result = " " + temp[i] + result; 
   } 
   return result; 
  } 


  // Driver methods to test above method 
  public static void main(String[] args) 
  { 
   String s1 = "Welcome to geeksforgeeks"; 
   System.out.println(reverseWords(s1)); 


   String s2 = "I love Java Programming"; 
   System.out.println(reverseWords(s2)); 
  } 
 }