HackerRank Ruby Strings Methods II Solution

Hello coders, In this post, you will learn how to solve HackerRank Ruby Strings Methods II 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 Strings Methods II Solution
HackerRank Ruby Strings Methods II Solution

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HackerRank Ruby Strings Methods II Solution

Let’s get started with Ruby Strings Methods II Solution

Problem Statement

In this tutorial, we’ll learn about the methods in String class that help us to search and replace portions of the string based on a text or pattern.

  • String.include?(string) – Returns true if str contains the given string or character. Very simple!
    > "hello".include? "lo"   #=> true  
    > "hello".include? "ol"   #=> false  
  • String.gsub(pattern, <hash|replacement>) – Returns a new string with all the occurrences of the pattern substituted for the second argument: . The pattern is typically a Regexp, but a string can also be used.
    "hello".gsub(/[aeiou]/, '*')                  #=> "h*ll*"
    "hello".gsub(/([aeiou])/, '')             #=> "hll"

Either method will depend upon the problem you are trying to solve, and the nature of input-output behavior you desire.

In this challenge, your task is to write the following methods:

  • mask_article which appends strike tags around certain words in a text. The method takes 2 arguments: A string and an array of words. It then replaces all the instances of words in the text with the modified version.
  • A helper method strike, given one string, appends strike off HTML tags around it. The strike off HTML tag is <strike></strike>.

For example:

strike(“Meow!”) # => “Meow!”
strike(“Foolan Barik”) # => “Foolan Barik”
mask_article(“Hello World! This is crap!”, [“crap”])
“Hello World! This is crap!”

Apply the helper method in completing your main method.

HackerRank Ruby Strings Methods II Solution

def mask_article(text, words_array)
  words_array.each { |word| text.gsub!(word, strike(word)) }
  return text
end
def strike s
  "<strike>#{s}</strike>"
end

Note: This problem (Ruby – Strings – Methods II  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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