W3911 Sudoku Server

Within these castle walls be forged Mavens of Computer Science ...

— Merlin, The Coder

Background A Sudoku board is made up of nine boxes. Boxes (container for nine cells) are listed from top-to-bottom, left-to-right indexed from zero. Cells are listed from top-to-bottom, left-to-right, indexed from zero. All valid payloads and responses must use well-formed JSON. “cells” is returned as follows: “cells”: [[<nine values from top-left>], [<nine values from top-middle>], …]

End Points

• POST /games

   * Action: Creates a new game and associated board
   * Payload: None
   * Response: Id uniquely identifying a game
   * Status code: 201 Created

• GET /games/<id>/cells

   * Action: None
   * Payload: None
   * Response: cells
   * Status code: 200 OK

• PUT /games/<id>/cells/<boxIndex>/<cellIndex>

   * Action: Place specified value at in game at boxIndex, cellIndex
   * Payload: value (null for removing value)
   * Response: Nothing
   * Status: 204 No Content

CoderMerlin™ Code Explorer: W0000 ({{{exerciseID}}}) 🟢

Assembly

C

C++

Java

Python

Swift

import Foundation struct Cell: Codable { let value: Int? func encode(to encoder: Encoder) throws { var container = encoder.container(keyedBy: CodingKeys.self) try container.encode(value, forKey: .value) } } let cell = Cell(value: 17) let encoder = JSONEncoder() guard let data = try? encoder.encode(cell), let string = String(data: data, encoding: .utf8) else { fatalError("Failed to encode data into json.") } print(string)

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