sudokuchallenge's Introduction

Sudoku Validator

The goal of the program

The goal of a program is to validate a sudoku game passed to it via the REST interface. Information about sudoku: https://en.wikipedia.org/wiki/Sudoku

Game Rules

9x9 grid
no repeating numbers in a row
no repeating numbers in a column
no repeating digit in a 3x3 sub-grid
empty fields do not invalidate the puzzle. A completely empty board should validate positively.

Challenge

Your goal is to extend and modify the project in such a way, that it fulfills the goals described above.
You're free to extend the interfaces, but please don't remove anything from them
Please pay attention to comments left in the code.
Your solution should be tested. Provided is one minimal "integration" test, just to ensure you reached the wanted goal. This test should fail initially, and it is your primary goal to make it pass. Please add other tests you find valuable.

Build instructions

# install gradle wrapper
> gradle wrapper

# build
> ./gradlew build

# build without tests
> ./gradlew build -x test

# run application from the command line
> ./gradlew bootRun

# clean the build
> ./gradlew clean

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