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exercism fetch r tournament

Tournament

Tally the results of a small football competition.

Based on an input file containing which team played against which and what the outcome was, create a file with a table like this:

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Team                           | MP |  W |  D |  L |  P
Devastating Donkeys            |  3 |  2 |  1 |  0 |  7
Allegoric Alaskans             |  3 |  2 |  0 |  1 |  6
Blithering Badgers             |  3 |  1 |  0 |  2 |  3
Courageous Californians        |  3 |  0 |  1 |  2 |  1

What do those abbreviations mean?

A win earns a team 3 points. A draw earns 1. A loss earns 0.

The outcome should be ordered by points, descending. In case of a tie, teams are ordered alphabetically.

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Input

Your tallying program will receive input that looks like:

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Allegoric Alaskans;Blithering Badgers;win
Devastating Donkeys;Courageous Californians;draw
Devastating Donkeys;Allegoric Alaskans;win
Courageous Californians;Blithering Badgers;loss
Blithering Badgers;Devastating Donkeys;loss
Allegoric Alaskans;Courageous Californians;win

The result of the match refers to the first team listed. So this line

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Allegoric Alaskans;Blithering Badgers;win

Means that the Allegoric Alaskans beat the Blithering Badgers.

This line:

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Courageous Californians;Blithering Badgers;loss

Means that the Blithering Badgers beat the Courageous Californians.

And this line:

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Devastating Donkeys;Courageous Californians;draw

Means that the Devastating Donkeys and Courageous Californians tied.

Installation

See this guide for instructions on how to setup your local R environment.

How to implement your solution

In each problem folder, there is a file named <exercise_name>.R containing a function that returns a NULL value. Place your implementation inside the body of the function.

How to run tests

Inside of RStudio, simply execute the test_<exercise_name>.R script. This can be conveniently done with testthat's auto_test function. Because exercism code and tests are in the same folder, use this same path for both code_path and test_path parameters. On the command-line, you can also run Rscript test_<exercise_name>.R.

Submitting Incomplete Solutions

It's possible to submit an incomplete solution so you can see how others have completed the exercise.