Iterator pattern PHP7

Installation

• Requirement installation environment: PHP 7, composer
• Instructions:
  • do composer install
  • to run the application, do php robots.php input1.txt and wait for print result( Can create more input text file with similar format, example input2.txt)
  • To run unit testing, do php tests.php 10 feel free to pass any number as parameter, its the number of commands generated for a random number of blocks between 2 and 25

Spec:

• onto -> immediate above or just ontop of
• over -> anywhere above

Commands:

• move a onto b
• move a over b
• pile a onto b
• pile a over b

Example

Input

• 10
• move 9 onto 1
• move 8 over 1
• move 7 over 1
• move 6 over 1
• pile 8 over 6
• pile 8 over 5
• move 2 over 1
• move 4 over 9
• quit

Output

 1 : 1 9 2 4 
 2 : 
 3 : 3
 4 : 
 5 : 5 8 7 6
 6 : 
 7 :
 8 :
 9 :  
10 :