PowerShell - leap, raindrops, reverse-string, two-fer

powershell/raindrops/.exercism/config.json

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+{
+  "blurb": "Convert a number to a string, the content of which depends on the number's factors.",
+  "authors": [
+    "gyssels"
+  ],
+  "contributors": [
+    "kchenery"
+  ],
+  "files": {
+    "solution": [
+      "Raindrops.ps1"
+    ],
+    "test": [
+      "Raindrops.tests.ps1"
+    ],
+    "example": [
+      ".meta/Raindrops.example.ps1"
+    ]
+  },
+  "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.",
+  "source_url": "https://en.wikipedia.org/wiki/Fizz_buzz"
+}

powershell/raindrops/.exercism/metadata.json

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+{"track":"powershell","exercise":"raindrops","id":"5b35a1ecc3b94181bc46ed1119958c44","url":"https://exercism.org/tracks/powershell/exercises/raindrops","handle":"Xevion","is_requester":true,"auto_approve":false}

powershell/raindrops/.version

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+0

powershell/raindrops/0

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+0

powershell/raindrops/HELP.md

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+# Help
+
+## Running the tests
+
+To run the tests run the command `Invoke-Pester` from within the exercise directory.
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit Raindrops.ps1` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [PowerShell track's documentation](https://exercism.org/docs/tracks/powershell)
+- [Exercism's support channel on gitter](https://gitter.im/exercism/support)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+To get help if you are having trouble, you can use one of the following resources:
+
+- [Powershell Documentation][powershell docs]
+
+[Add more resources]: TODO
+
+[powershell docs]: https://docs.microsoft.com/en-us/powershell/

powershell/raindrops/README.md

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+# Raindrops
+
+Welcome to Raindrops on Exercism's PowerShell Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## 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 a one number is a factor of another is to use the [modulo operation](https://en.wikipedia.org/wiki/Modulo_operation).
+
+The rules of `raindrops` are that 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.
+
+## 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".
+
+## Source
+
+### Created by
+
+- @gyssels
+
+### Contributed to by
+
+- @kchenery
+
+### Based on
+
+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. - https://en.wikipedia.org/wiki/Fizz_buzz

powershell/raindrops/Raindrops.ps1

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+Function Get-Raindrops() {
+    <#
+    .SYNOPSIS
+    Given a number convert it to Pling, Plang, Plong if it has factors of 3, 5 or 7.
+    
+    .DESCRIPTION
+    Convert a number to a string, the contents of which depend on the number's factors.
+
+    - If the number has 3 as a factor, output 'Pling'.
+    - If the number has 5 as a factor, output 'Plang'.
+    - If the number has 7 as a factor, output 'Plong'.
+    - If the number does not have 3, 5, or 7 as a factor, just pass the number's digits straight through.
+    
+    .PARAMETER Rain
+    The number to evaluate
+    
+    .EXAMPLE
+    Get-Raindrops -Rain 35
+
+    This will return PlangPlong as it has factors of 5 and 7
+
+    .EXAMPLE
+    Get-Raindrops -Rain 12121
+
+    This will return 12121 as it does not contain factors of 3, 5 or 7 so the value is passed through.
+    #>
+    [CmdletBinding()]
+    Param(
+        [int]$Rain
+    )
+
+
+    [String] $result = ""
+    if ($Rain % 3 -eq 0) { $result += "Pling" }
+    if ($Rain % 5 -eq 0) { $result += "Plang" }
+    if ($Rain % 7 -eq 0) { $result += "Plong" }
+
+    if ($result.Length -gt 0) { return $result }
+    return $Rain.ToString()
+}

powershell/raindrops/Raindrops.tests.ps1

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+BeforeAll {
+    . ".\Raindrops.ps1"
+}
+
+Describe "Test Get-Raindrops" {
+
+	It "Given the number <Number> it should output <Result>" -TestCases @(
+		@{ Number = 1; Result = "1" },
+		@{ Number = 3; Result = "Pling" },
+		@{ Number = 5; Result = "Plang" },
+		@{ Number = 7; Result = "Plong" },
+		@{ Number = 6; Result = "Pling" },
+		@{ Number = 9; Result = "Pling" },
+		@{ Number = 10; Result = "Plang" },
+		@{ Number = 14; Result = "Plong" },
+		@{ Number = 15; Result = "PlingPlang" },
+		@{ Number = 21; Result = "PlingPlong" },
+		@{ Number = 25; Result = "Plang" },
+		@{ Number = 27; Result = "Pling" },
+		@{ Number = 35; Result = "PlangPlong" },
+		@{ Number = 49; Result = "Plong" },
+		@{ Number = 52; Result = "52" },
+		@{ Number = 105; Result = "PlingPlangPlong" },
+		@{ Number = 3125; Result = "Plang" },
+		@{ Number = 12121; Result = "12121" }
+	) {
+		Param(
+			[int]$Number,
+			[string]$Result
+		)
+
+		Get-Raindrops -Rain $Number | Should -BeExactly $Result
+	}
+}