This is my solution for the Robot Simulator challenge from CodeSubmit. The challenge was part of the interview process for a Senior Developer role at Thinking Capital.
Use this code as inspiration (as there are many potential solutions), but please do not plagiarise!
Copyright John Pitchko 2021
Write a robot simulator.
A robot factory's test facility needs a program to verify robot movements.
The robots have three possible movements:
- turn right
- turn left
- advance
Robots are placed on a hypothetical infinite grid, facing a particular direction (north, east, south, or west) at a set of {x,y} coordinates, e.g., {3,8}, with coordinates increasing to the north and east.
The robot then receives a number of instructions, at which point the testing facility verifies the robot's new position, and in which direction it is pointing.
- The letter-string "RAALAL" means:
- Turn right
- Advance twice
- Turn left
- Advance once
- Turn left yet again
- Say a robot starts at {7, 3} facing north. Then running this stream of instructions should leave it at {9, 4} facing west.
For running the tests provided, you will need the Minitest gem. Open a terminal window and run the following command to install minitest:
gem install minitest
If you would like color output, you can require 'minitest/pride' in
the test file, or note the alternative instruction, below, for running
the test file.
Run the tests from the root directory using the following command:
ruby robot_simulator_test.rb
To include color from the command line:
ruby -r minitest/pride robot_simulator_test.rb
- Ruby best practices
- Show us your work through your commit history
- Completeness: did you complete the features? Are all the tests running?
- Correctness: does the functionality act in sensible, thought-out ways?
- Maintainability: is it written in a clean, maintainable way?
Please organize, design, and document your code as if it were going into production - then push your changes to the master branch. After you have pushed your code, you may submit the assignment on the assignment page.
All the best and happy coding,
The Thinking Capital Team