Diamond in Elixir
Given a letter, print a diamond starting with 'A' with the supplied letter at the widest point.
exercism fetch elixir diamond
The diamond kata takes as its input a letter, and outputs it in a diamond shape. Given a letter, it prints a diamond starting with 'A', with the supplied letter at the widest point.
- The first row contains one 'A'.
- The last row contains one 'A'.
- All rows, except the first and last, have exactly two identical letters.
- All rows have as many trailing spaces as leading spaces. (This might be 0).
- The diamond is horizontally symmetric.
- The diamond is vertically symmetric.
- The diamond has a square shape (width equals height).
- The letters form a diamond shape.
- The top half has the letters in ascending order.
- The bottom half has the letters in descending order.
- The four corners (containing the spaces) are triangles.
In the following examples, spaces are indicated by
Diamond for letter 'A':
Diamond for letter 'C':
Diamond for letter 'E':
····A···· ···B·B··· ··C···C·· ·D·····D· E·······E ·D·····D· ··C···C·· ···B·B··· ····A····
Execute the tests with:
$ elixir diamond_test.exs
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
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.