textalyze.rb

# Method name: item_counts
# Input:   An arbitrary array
#
# Returns: A hash where every item is a key whose value is the number of times
#          that item appears in the array
#
# Prints:  Nothing

# Version 0.1
# ====================================================

def item_counts(array)
  counts = {} # Initialize counts to an empty Hash
  array.each do |item|

    if counts[item] == nil      
      counts[item] = 1          
    else
      counts[item] += 1         
    end
  end

  return counts

end

# Version 0.2
# =====================================================

def str_to_arr(str) 
  lower_case_string = sanitize(str)
  frequency_pairs(lower_case_string.split(""))  
end

# Version 0.3
# ================================================

def sanitize(str)
  str.downcase
end

# Version 0.4 / 1.0
# ================================================

# if ARGV.size == 0
#   print "Please enter a file location: "
#   input = gets.chomp
#   file_contents = File.read(input)
# else
#   file_contents = File.read(ARGV[0])
# end

# Version 1.1
# ================================================

def frequency_pairs(arr)
  percentage = {}

  frequency = item_counts(arr)

  frequency.each do |k, v|
    percentage[k] = "#{((v.to_f / arr.size).round(3) * 100)}%"
  end

  # percentage.each do |k, v|
  #   puts "#{k} [#{v}]"      
  # end

  return percentage

end

def print_frequency(percentage)
  percentage.each do |k, v|
    puts "#{k} [#{v}]"      
  end
end

# TESTS
# ================================================

# str_to_arr(file_contents)
str_to_arr("Hello, World. My name is Sagar and I'm learning to be a developer.")