60 lines
1.6 KiB
Markdown
60 lines
1.6 KiB
Markdown
# Raindrops
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Convert a number to a string, the contents of which depend on the number's factors.
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- If the number has 3 as a factor, output 'Pling'.
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- If the number has 5 as a factor, output 'Plang'.
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- If the number has 7 as a factor, output 'Plong'.
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- If the number does not have 3, 5, or 7 as a factor,
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just pass the number's digits straight through.
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## Examples
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- 28's factors are 1, 2, 4, **7**, 14, 28.
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- In raindrop-speak, this would be a simple "Plong".
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- 30's factors are 1, 2, **3**, **5**, 6, 10, 15, 30.
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- In raindrop-speak, this would be a "PlingPlang".
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- 34 has four factors: 1, 2, 17, and 34.
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- In raindrop-speak, this would be "34".
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## Running tests
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Execute the tests with:
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```bash
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$ elixir raindrops_test.exs
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```
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### Pending tests
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In the test suites, all but the first test have been skipped.
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Once you get a test passing, you can unskip the next one by
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commenting out the relevant `@tag :pending` with a `#` symbol.
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For example:
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```elixir
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# @tag :pending
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test "shouting" do
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assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
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end
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```
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Or, you can enable all the tests by commenting out the
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`ExUnit.configure` line in the test suite.
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```elixir
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# ExUnit.configure exclude: :pending, trace: true
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```
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For more detailed information about the Elixir track, please
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see the [help page](http://exercism.io/languages/elixir).
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## Source
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A variation on a famous interview question intended to weed out potential candidates. [http://jumpstartlab.com](http://jumpstartlab.com)
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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