Mars Rover Kata

Task

Develop an API for a rover that moves around a 10x10 grid plateau.

The rover has:

• X, Y coordinates representing its position on the grid.
• Direction represented by the letters N, E, S, W (North, East, South, West).
• A starting position: 0:0:N.

Input

The rover takes as an input a string of commands. Each character is a single move command.

The allowed characters are:

• L and R - rotate the direction of the rover.
• M - move the rover forward 1 square on the grid in the direction it is facing.

If the rover reaches the end of the grid, it wraps around.

Output

The output is the final position of the rover. The final position is a string like "2:3:W" where:

• 2 is the X coordinate.
• 3 is the Y coordinate.
• W is the position of the rover.

Examples

• Input: MMRMMLM, Output: 2:3:N
• Input: MMMMMMMMMM, Output: 0:0:N (wrap around)

Example Interface

type MarsRover interface {
	Execute(command string) string
}

Rules

• The rover receives a string of commands like "RMMLM" and returns its final position - "2:1:N".
• The rover wraps around if it reaches the end of the grid.

References

• Codurance Mars Rover