Creates a perfect pyramid of *'s in terminal. make a call to the method with your specified height

pyramid.rb

def make_stars(height)
  star  = '*'
  space = ' '
  arr   = []
  
  # Sets up non-formatted stars for given height
  for i in 1..height
    arr << [i == 1 ? star : star * ((i * 2) - 2)]
  end

  # Adds spaces in between each star
  arr    = arr.map { |e| e.join().split('').join(' ') }
  length = arr.last.length

  # Adds spaces before and after each set of stars to center them above the last set of stars, returns array
  arr.each_with_index.map { |e,i| (space * ((length - arr[i].size) / 2)) + e + (space * ((length - arr[i].size) / 2))  }
end
# Example call to method make_stars with a height of 5
puts make_stars(5)
# Output looks like:
#       *       
#      * *      
#    * * * *    
#  * * * * * *  
#* * * * * * * *