Step by Step solution about How to resolve the algorithm Number reversal game step by step in the Ruby programming language

The provided Ruby code snippet is a game that asks the user to repeatedly reverse digits in a randomly shuffled array of numbers until the array is sorted in ascending order. Here's a step-by-step explanation of the code:

1. Initialize an array ary with numbers from 1 to 9 ((1..9).to_a).

2. Shuffle the array using ary.shuffle!.

3. Enter a loop that continues until the array ary is sorted (ary == ary.sort).

4. Inside the loop:

   • Display the current state of the array ary to the user.
   • Prompt the user to enter the number of digits to reverse (num = gets.to_i). Note that the code doesn't validate the user's input.
   • Reverse the first num elements of the array ary using ary[0, num] = ary[0, num].reverse.
   • Increment the score by 1.

5. Once the array ary is sorted (i.e., ary == ary.sort), the loop exits, and the code prints the sorted array and the user's score (score).

Overall, this code creates a simple game where the user tries to sort an array of numbers by reversing digits until the array is sorted. The user's score indicates how many moves it took to sort the array.

ary = (1..9).to_a
ary.shuffle! while ary == ary.sort
score = 0
until ary == ary.sort
  print "#{ary.inspect} -- How many digits to reverse? "
  num = gets.to_i  # should validate input
  ary[0, num] = ary[0, num].reverse
  score += 1
end
p ary
puts "Your score: #{score}"