Mars Rover Kata.

– Develop an api that moves a rover around a grid. – You are given the initial starting point (x,y) of a rover and the direction (N,S,E,W) it is facing. – The rover receives a character array of commands. – The only commands you can give the rover are f,b,l, and r.

Work on: – Implement commands that move the rover forward/backward (f,b). – Implement commands that turn the rover left/right (l,r).

Bonus: – Implement wrapping from one edge of the grid to another. (planets are spheres after all) – Implement obstacle detection before each move to a new square. If a given sequence of commands encounters an obstacle, the rover moves up to the last possible point and reports the obstacle.

Here is an example: – Let’s say that the rover is located at 0,0 facing North on a 100×100 grid. – Given the command “ffrff” would put the rover at 2,2 facing East.

Rules

• No red phases while refactoring.
• Be careful about edge cases and exceptions. We can not afford to lose a mars rover, just because the developers overlooked a null pointer.

Mars Rover Kata. Credit http://amirrajan.net/Blog/code-katas-mars-rover