Toy Robot Coding Challenge

Setup

Requirements:

• Java 8+

Running the application

Default server port will be 8080

• mvnw spring-boot:run

Accessing the application REST API's

Open a browser url using http://localhost:8080/swagger-ui.html

Implementation

The toy robot REST api's support two modes and separate endpoints are provided to support a stateful and a stateless toy robot.

The /rest/robot/cli/batch endpoint support a stateless robot and the implementation purpose is to demonstrate the CLI requirements in the specification below.

The rest/robot/* endpoint's support a stateful robot while the server is running (note there is no permanent persistence) and the implementation purpose is to demonstrate how the robot commands would be implemented as separate REST endpoints.

Specification

Coding Challenge 1: Toy Robot

Requirements

The application is a simulation of a toy robot moving on a square tabletop, of dimensions 5 x 5 units. There are no other obstructions on the table surface. The robot is free to roam around the surface of the table, but must be prevented from falling to destruction. Any movement that would result in the robot falling from the table must be prevented, however further valid movement commands must still be allowed. Create an application that can read in commands of the following form:

PLACE X,Y,F
MOVE
LEFT
RIGHT
REPORT

PLACE will put the toy robot on the table in position X,Y and facing NORTH, SOUTH, EAST or WEST. The origin(0,0) can be considered to be the SOUTH WEST most corner.

MOVE will move the toy robot one unit forward in the direction it is currently facing. LEFT and RIGHT will rotate the robot 90 degrees in the specified direction without changing the position of the robot.

REPORT will announce the X,Y and F of the robot. Expectations of your application:

• The application must be a Spring-Boot-Application
• Input must be realised over the REST-API, take care when designing the REST-API
• The robot that is not on the table can choose the ignore the MOVE, LEFT, RIGHT and REPORT commands.
• The robot must not fall off the table during movement. This also includes the initial placement of the toy robot.
• Any move that would cause the robot to fall must be ignored.
• It is not required to provide any graphical output showing the movement of the toy robot.

Conceptual Example from CLI implementation:

PLACE 0,0,NORTH MOVE REPORT
Output: 0,1,NORTH

PLACE 0,0,NORTH LEFT REPORT
Output: 0,0,WESTH

PLACE 1,2,EAST MOVE MOVE LEFT MOVE REPORT
Output: 3,3,NORTH

MOVE REPORT
Output: ROBOT MISSING