Talking with GitHubbers was exciting, friendly, and nice. I've met different GitHubbers in Amsterdam and from San Francisco. While it wasn’t moving fast with scheduling appointments and email responses, I won't hesitate to apply again.

Describe the common components of web application frameworks. What purpose does each component serve? What is the benefit of separating each component from the others?

Coding challenge: You'll build a simplified version of Battleship.

You'll have 3 ships that will be placed on a 10 by 10 grid, which is the battleground. Each cell in the battleground is identified by its space on an x,y axis, with [0,0] being the cell in the bottom-left corner. Each ship is 1 cell wide and 3 cells long. On initial placement, each ship is oriented vertically. To initialize the playing field, you'll receive a 2-dimensional array where each element in the array contains the x,y coordinates of each ship's topmost cell. So, for example, if you receive this array [[0,3],[4,8],[6,6]], then your initial playing board will have ships that occupy the following cells:

[[0,3],[0,2],[0,1]], [[4,8],[4,7],[4,6]], and [[6,6],[6,5],[6,4]].

Your game interface will be a basic HTTP API. Each of the methods should return a JSON response with a single property named message. We want you to flesh out the provided battleship app so that the create function in app/game/index.js accepts a 2-dimensional array (represented as JSON) that contains the topmost cell coordinates of ships to initialize the playing board. You'll then need to complete the update method to take x and y parameters and return a JSON response where message is set to the string "hit" if the coordinate lands on a ship. The update method should return the string "miss" for the message property if the coordinate does not land on a ship. If a ship has been hit on all 3 of its cells, then the update method should return the string "sunk" for the message property.

What we're looking for:

We want you to submit a solution you're proud of, and we want you to be successful, so here are some of the things we're looking for in a solution:

• A solution that is correct for various input values. We're big fans of writing tests to help us build quality software.
• A solution that shows good object-oriented (or functional) programming principles, but doesn't go overboard.
• A solution that shows familiarity with the language used.