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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:

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?

  • MP: Matches Played
  • W: Matches Won
  • D: Matches Drawn (Tied)
  • L: Matches Lost
  • P: Points

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.

Input

Your tallying program will receive input that looks like:

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

Allegoric Alaskans;Blithering Badgers;win

Means that the Allegoric Alaskans beat the Blithering Badgers.

This line:

Courageous Californians;Blithering Badgers;loss

Means that the Blithering Badgers beat the Courageous Californians.

And this line:

Devastating Donkeys;Courageous Californians;draw

Means that the Devastating Donkeys and Courageous Californians tied.

Formatting the output is easy with String's padding functions. All number columns can be left-padded with spaces to a width of 2 characters, while the team name column can be right-padded with spaces to a width of 30.

Running tests

Execute the tests with:

$ elixir tournament_test.exs

Pending tests

In the test suites, all but the first test have been skipped.

Once you get a test passing, you can unskip the next one by commenting out the relevant @tag :pending with a # symbol.

For example:

# @tag :pending
test "shouting" do
  assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
end

Or, you can enable all the tests by commenting out the ExUnit.configure line in the test suite.

# ExUnit.configure exclude: :pending, trace: true

For more detailed information about the Elixir track, please see the help page.

Submitting Incomplete Solutions

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