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raindrops: sync #1630

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26 changes: 15 additions & 11 deletions exercises/practice/raindrops/.docs/instructions.md
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# Instructions

Your task is to convert a number into a string that contains raindrop sounds corresponding to certain potential factors.
A factor is a number that evenly divides into another number, leaving no remainder.
The simplest way to test if one number is a factor of another is to use the [modulo operation][modulo].
Your task is to convert a number into its corresponding raindrop sounds.

The rules of `raindrops` are that if a given number:
If a given number:

- has 3 as a factor, add 'Pling' to the result.
- has 5 as a factor, add 'Plang' to the result.
- has 7 as a factor, add 'Plong' to the result.
- _does not_ have any of 3, 5, or 7 as a factor, the result should be the digits of the 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 has 7 as a factor, but not 3 or 5, so the result would be "Plong".
- 30 has both 3 and 5 as factors, but not 7, so the result would be "PlingPlang".
- 34 is not factored by 3, 5, or 7, so the result would be "34".
- 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"`.

~~~~exercism/note
A common way to test if one number is evenly divisible by another is to compare the [remainder][remainder] or [modulus][modulo] to zero.
Most languages provide operators or functions for one (or both) of these.

[remainder]: https://exercism.org/docs/programming/operators/remainder
[modulo]: https://en.wikipedia.org/wiki/Modulo_operation
~~~~
3 changes: 3 additions & 0 deletions exercises/practice/raindrops/.docs/introduction.md
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# Introduction

Raindrops is a slightly more complex version of the FizzBuzz challenge, a classic interview question.