Ruby Procs HackerRank Solution

Hello coders, In this post, you will learn how to solve Ruby Procs HackerRank 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.

We also provide Hackerrank solutions in CC++Java programming, and Python Programming languages so whatever your domain we will give you an answer in your field.

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Ruby Procs HackerRank Solution
Ruby Procs HackerRank Solution

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Ruby Procs HackerRan

Let’s get started with Ruby Procs HackerRank

Problem Statement

Passing blocks is one way to pass functions as arguments to other functions.

Blocks are one of the very few exceptions to the “everything is an object” rule in Ruby. Blocks are not objects, and they can’t be saved to variables.

Proc objects are blocks of code that can be bound to a set of local variables. You can think of a proc object as a “saved” block.

Procs are a great way of keeping your code DRY. DRY stands for Do not Repeat Yourself.



def foo(a, b, my_proc), b)

add = proc {|x, y| x + y}

puts foo(15, 10, add)



In this example, we have created the proc add, which adds two numbers.
The proc add is passed as a parameter to the method foo.
In the method, b) executes the proc.


You are given a partially complete code. Your task is to fill in the blanks (______).

The square_of_sum method computes the sum of the elements in an input array and returns the square of the summed elements.

For example:

Input array: [1, 2, 3]
Output: 36

Ruby Procs HackerRank Solution

def square_of_sum (my_array, proc_square, proc_sum)
  sum =
proc_square_number = proc {|x| x**2}
proc_sum_array     = proc { |my_array| my_array.sum }
my_array = gets.split().map(&:to_i)
puts square_of_sum(my_array, proc_square_number, proc_sum_array)

Note: This problem (Ruby Procs HackerRank 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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