HackerRank Ruby Control Structures Case (Bonus Question) Solution

Hello coders, In this post, you will learn how to solve HackerRank Ruby Control Structures Case (Bonus Question) Solution. This problem is a part of the Ruby Tutorial series. One more thing to add, don’t straight away look for the solutions, first try to solve the problems by yourself. If you find any difficulty after trying several times, then look for the solutions.

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Ruby Control Structures Case (Bonus Question) HackerRank Solution
HackerRank Ruby Control Structures Case (Bonus Question) Solution

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HackerRank Ruby Control Structures Case (Bonus Question) Solution

Let’s get started with Ruby Control Structures Case (Bonus Question) Solution

Problem Statement

This is a bonus question. Feel free to skip to the next challenge.

HackerRank is written in RoR and we have various classes defined in it. Some of them are

  1. Hacker
  2. Submission
  3. TestCase
  4. Contest


You have been given a function where an object which may or may not be of the above mentioned type is sent as an argument. You have to use the case control structure in Ruby to identify the class to which the object belongs and print the following output:

  • if Hacker, output “It’s a Hacker!”
  • if Submission, output “It’s a Submission!”
  • if TestCase, output “It’s a TestCase!”
  • if Contest, output “It’s a Contest!”
  • for any other object, output It’s an unknown model”


  • use case (switch statement of Ruby)
  • use puts for printing
  • Ruby Docs on case

HackerRank Ruby Control Structures Case (Bonus Question) Solution

def identify_class(obj)
    # write your case control structure here
    case obj
        when Hacker
            puts "It's a Hacker!"
        when Submission
            puts "It's a Submission!"
        when TestCase
            puts "It's a TestCase!"
        when Contest
            puts "It's a Contest!"
            puts "It's an unknown model"

Note: This problem (Ruby Control Structures – Case (Bonus Question) is generated by HackerRank but the solution is provided by Chase2Learn. This tutorial is only for Educational and Learning purpose.


1. What is Ruby programming?

Ruby programming is a high-level, interpreted, general-purpose programming language. It is designed for developing web applications and is known for its fast, concise, and easy-to-learn syntax. Ruby is used by many large tech companies such as Google, Facebook, and Twitter. Read more

2. Should I put HackerRank certificate on resume?

These certificates are useless, and you should not put them on your resume. The experience you gained from getting them is not useless. Use it to build a portfolio, and link to it on your resume. 

3. Can I retake HackerRank test?

The company which sent you the HackerRank Test invite owns your Test submissions and results. It’s their discretion to permit a reattempt for a particular Test. If you wish to retake the test, we recommend that you contact the concerned recruiter who invited you to the Test and request a re-invite. 

4. What is HackerRank?

HackerRank is a tech company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. Wikipedia

5. Where can I find HackerRank Ruby solutions?

in this post, you will get all the solutions to HackerRank ruby Problems.

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