Ruby loops and classes; splitting a string into an array and back to a string again

Question

Ruby newbie here working on loops with classes. I was supposed create a method that would take a string and add exclamation points to the end of each word (by making it an array with .split) and join the 'exclaimed' words as a string again. I've been at this for two hours already and decided I should seek help. I have a handful of ideas but I keep coming up with a NoMethod error. Below is one of ways that made sense to me but of course, it doesn't work. I've also added specs at the very end.

class StringModifier
  attr_accessor :string
  def initialize(string)
    @string = string
  end

  def proclaim
    new_array = []
    string.split.each do |word|
      new array = "#{word}!"
        new_array.join
    end
    new_array
  end
end

SPECS

describe StringModifier do
  describe "#proclaim" do
    it "adds an exclamation mark after each word" do
      blitzkrieg_bop = StringModifier.new("Hey ho let's go").proclaim
      expect(blitzkrieg_bop).to eq("Hey! ho! let's! go!")
    end
  end
end

new array = "#{word}!" is a typo? It should be new_array = "#{word}!" — Arup Rakshit
– Arup Rakshit, Commented Feb 21, 2015 at 18:47

Arup Rakshit · Accepted Answer · 2015-02-21 18:54:17Z

1

Write your method as:

def proclaim
  string.split.map { |word| "#{word}!" }.join(" ")
end

Or write it as :

def proclaim
  a = string.split
  ("%s! " * a.size % a).strip
end

Tested :

[30] pry(main)> a = "Hey ho let's go".split
=> ["Hey", "ho", "let's", "go"]
[31] pry(main)> ("%s! " * a.size % a).strip
=> "Hey! ho! let's! go!"
[32] pry(main)>

edited Feb 21, 2015 at 18:54

answered Feb 21, 2015 at 18:49

Arup Rakshit

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3 Comments

Mohammad AbuShady Over a year ago

.join will join without space, you should do a .join(' ')

Arup Rakshit Over a year ago

@MohammadAbuShady Thanks... Friend.. Overconfidence killing me :)

Mohammad AbuShady Over a year ago

I was gonna answer the same answer my self, I wouldn't have noticed if i hadn't tested it lol

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