Dice example with tally for frequency of results

dice.rb

puts "How many times do you want to roll?"
choice = gets.chomp
puts "How many sides should dice have?"
sides = gets.chomp

c = choice.to_i
s = sides.to_i

# store our tally of results in a hash with a default value
# for uninitialized members of 0
results = Hash.new(0)

puts "Rolling"
c.times do
  roll = rand(1...s) # instead of adding one to the roll each time, we can rand from a range
  results[roll] += 1 # because the default is 0, we can simply increment a missing value
end

puts "How many times did each roll appear?"

# display a heading for our data
puts "Result\tTimes Rolled"
# sort the hash by 'last', that is the value- the key is the first value in each pair.
# reverse it to put the most frequent to the front of the list
# convert into a hash again because sort_by leaves us with a nested array structure.
results.sort_by(&:last).reverse.to_h.each do |k, v|
  # print the results under our heading
  puts "#{k}\t#{v}"
end