HackerRank Ruby Control Structures Unless Solution

Hello coders, In this post, you will learn how to solve HackerRank Ruby Control Structures Unless 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 Unless Solution
HackerRank Ruby Control Structures Each Solution

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HackerRank Ruby Control Structures Unless Solution

Let’s get started with Ruby Control Structures Each Solution

Problem Statement

You’ve updated the score of every HackerRank user who participated in a contest. Sometimes, HackerRank admins also participate in a given contest but care is taken to ensure that their submissions do not get any score and their score is not updated.

Like the previous challenge, you are given a method scoring with an array passed as an argument. Each element of the array is of class User.

User has two public methods, is_admin? and update_score. Your task in this challenge is to use the control structure unless and update all elements of the array who are not admins.


unless user.is_admin?


user.update_score unless user.is_admin?

The above code is a Ruby one liner.


unless is the logical equivalent of if not

HackerRank Ruby Control Structures Unless Solution

def scoring(array)
  # update_score of every user in the array unless the user is admin
    array.each do |user|
        user.update_score unless user.is_admin?

Note: This problem (Ruby Control Structures – Unless) 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.

Finally, we are now, in the end, I just want to conclude some important message for you

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