Raindrops

Instructions

Your task is to convert a number into its corresponding raindrop sounds.

If a given number:

• is divisible by 3, add "Pling" to the result.
• is divisible by 5, add "Plang" to the result.
• is divisible by 7, add "Plong" to the result.
• is not divisible by 3, 5, or 7, the result should be the number as a string.

Examples

• 28 is divisible by 7, but not 3 or 5, so the result would be "Plong".
• 30 is divisible by 3 and 5, but not 7, so the result would be "PlingPlang".
• 34 is not divisible by 3, 5, or 7, so the result would be "34".

You need to implement the convert function that returns number converted to raindrop sound. You can use the provided signature if you are unsure about the types, but don't let it restrict your creativity:

convert :: Int -> String

This exercise works with textual data. For historical reasons, Haskell's String type is synonymous with [Char], a list of characters. For more efficient handling of textual data, the Text type can be used.

As an optional extension to this exercise, you can

• Read about string types in Haskell.
• Add - text to your list of dependencies in package.yaml.
• Import Data.Text in the following way:

import qualified Data.Text as T
import           Data.Text (Text)

• You can now write e.g. convert :: Int -> Text and refer to Data.Text combinators as e.g. T.pack.
• Look up the documentation for Data.Text,
• You can then replace all occurrences of String with Text in Raindrops.hs:

convert :: Int -> Text

This part is entirely optional.

---

Source

A variation on FizzBuzz, a famous technical interview question that is intended to weed out potential candidates. That question is itself derived from Fizz Buzz, a popular children's game for teaching division.