1.5 KiB
Matrix
Given a string representing a matrix of numbers, return the rows and columns of that matrix.
So given a string with embedded newlines like:
9 8 7
5 3 2
6 6 7
representing this matrix:
0 1 2
|---------
0 | 9 8 7
1 | 5 3 2
2 | 6 6 7
your code should be able to spit out:
- A list of the rows, reading each row left-to-right while moving top-to-bottom across the rows,
- A list of the columns, reading each column top-to-bottom while moving from left-to-right.
The rows for our example matrix:
- 9, 8, 7
- 5, 3, 2
- 6, 6, 7
And its columns:
- 9, 5, 6
- 8, 3, 6
- 7, 2, 7
Running tests
Execute the tests with:
$ elixir matrix_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.
Source
Warmup to the saddle-points warmup. http://jumpstartlab.com
Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.