Java Program 09: Printing Words In Circular Order From Given Index

Hello Folks,

This is frequently asked interview question.

Problem:

Suppose you have below string:

“Make Selenium Easy” Where

-“Make” is at position zero.
-“Selenium” is at first position .
-“Easy” is at second position .

If I say:

-zero, You need to print “Make Selenium Easy”.
-one, you need to print “Selenium Easy Make”.
-two, you need to print “Easy Selenium Make”.

Accept string and position from user.

Solution:

 

package MakeSeleniumEasy;

import java.util.Scanner;

public class CircularString {

	public static void main(String[] args) {
		
		Scanner sc= new Scanner(System.in);
		System.out.println("Enter words separated by space:");
		String input= sc.nextLine();
		System.out.println("Enter position:");
		int index=sc.nextInt();
		// Splitting input string in to string array
		String inputArray[]= input.split(" ");
		// validation for acceptable index
		// index should be grater than or equal to zero and less than length of array
		if(index>=0 && index <inputArray.length)
		{
			System.out.print("Output: ");
			// Printing from given index till last index
			for(int i=index;i<inputArray.length;i++)
			{
				System.out.print(inputArray[i]+" ");
			}
			// printing from index zero to position-1
			for(int k=0;k<index;k++)
			{
				System.out.print(inputArray[k]+" ");
			}
		}
		else
		{
			System.out.println("Index is invalid.");
		}
	}
}

Output:

Enter words separated by space:
Make Selenium Easy
Enter position:
0
Output: Make Selenium Easy 
===========================
Enter words separated by space:
Make Selenium Easy
Enter position:
1
Output: Selenium Easy Make 
==========================
Enter words separated by space:
Make Selenium Easy
Enter position:
2
Output: Easy Make Selenium 
==========================
Enter words separated by space:
Make Selenium Easy
Enter position:
3
Index is invalid.

Program is self descriptive. I have put required comments as well. If you have nay doubt, feel free to comment.

#HappyCoding

Author: Amod Mahajan

My name is Amod Mahajan and I am an IT employee with 4+ years of experience in Software testing and staying in Bengaluru. My area of interest is Automation testing. I started from basics and went throw so many selenium tutorials. Thanks to Mukesh Otwani as his tutorials are easy and cover basics to advance. I have habit of exploring concepts by deep diving. I used to make notes. I thought of sharing my knowledge through posts and now I am here. #KeepLearning #ShareLearning