Print Words Of String In Reverse Order

In this java program we will develop a solution to print words of string in reverse order.

Java Program To Print Words Of String In Reverse Order

package problems;

public class StringWordsInReverse {
public static String reverseTheWordsSol1(String input) {
     String result = "";
     String arr[] = input.split(" ");
     int i = arr.length -1;
     while(i >=0){
         if(i == arr.length -1)
            result = result + arr[i];
         else
             result = result + " " + arr[i];
         i--;
     }
     return result;
}
public static String reverseTheWordsSol2(String input) {
     int i = input.length() - 1;
     int start, end = i + 1;
     String result = "";
     while (i >= 0) {
         if (input.charAt(i) == ' ') {
             start = i + 1;
             while (start != end)
                 result += input.charAt(start++);
             result += ' ';
             end = i;
         }
         i--;
    }



     start = 0;
     while (start != end)
         result += input.charAt(start++);
     return result;
}






public static void main(String[] args) {
     System.out.println("Reversed words in string 'I am Alex' is: "+reverseTheWordsSol1("I am Alex"));
     System.out.println("Reversed words in string 'I am Alex' is: "+reverseTheWordsSol2("I am Alex"));
}
}

Output:

Reversed words in string 'I am Alex' is: Alex am I
Reversed words in string 'I am Alex' is: Alex am I