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Solution: Generating Lotto Numbers Using a Method

Explore how to create a Ruby method that generates unique lotto numbers by using a while loop to ensure no duplicates. Learn to implement random number generation and method return values for effective problem-solving in Ruby.

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Solution

Ruby
def get_next_valid_lotto_number(existing_lotto_numbers)
	new_lotto_number = rand(49)
	while existing_lotto_numbers.include?(new_lotto_number)
		new_lotto_number = rand(49)
  	end 
	return new_lotto_number 
end
lotto_numbers = [] 
6.times do 
  new_valid_number = get_next_valid_lotto_number(lotto_numbers)
  lotto_numbers << new_valid_number
end
puts "Your winning lotto numbers are #{lotto_numbers.inspect}, good luck!"

Explanation

  • Line 2: We generates a ...