HackerRank Ruby Enumerable each_with_index Solution

Hello coders, In this post, you will learn how to solve HackerRank Ruby Enumerable each_with_index 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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HackerRank Ruby Enumerable each_with_index Solution
HackerRank Ruby Enumerable each_with_index Solution

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HackerRank Ruby Enumerable each_with_index

Let’s get started with HackerRank Ruby Enumerable each_with_index

Problem Statement

In the previous challenge, we learned about each method being central to all of the methods provided by Enumerable class. One of such useful methods is each_with_index which allows you to iterate over items along with an index keeping count of the item.

For example,

> colors = ['red', 'green', 'blue']
> colors.each_with_index { |item, index| p "#{index}:#{item}" }
"0:red"
"1:green"
"2:blue"

As you can note, the counting of items starts from 0.

In this challenge, your task is to complete the skip_animals method that takes an animals array and a skip integer and returns an array of all elements except first skip number of items as shown in the example below.

For example,

> skip_animals(['leopard', 'bear', 'fox', 'wolf'], 2)
=> ["2:fox", "3:wolf"]

It is guaranteed that number of items in animals array is greater than the value of skip.

HackerRank Ruby Enumerable each_with_index Solution

def skip_animals(animals, skip)
    arr = []
    animals.each_with_index do |item, index| 
            arr << "#{index}:#{item}" unless index < skip
    end
    return arr
end

Note: This problem (Ruby Enumerable each_with_index) is generated by HackerRank but the solution is provided by Chase2Learn. This tutorial is only for Educational and Learning purpose.

FAQ:

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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