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.

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.

Hint

unless user.is_admin?
user.update_score
end

or

user.update_score unless user.is_admin?

The above code is a Ruby one liner.

Explanation

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?
    end
end

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.