Add PowXn and Phone Numbers

Author: josephwhite

.github/workflows/powershell.yml

@@ -36,6 +36,8 @@ jobs:
         run: |
           New-Item -Path ".\pester" -type Directory
           .\utils\pester-agent.ps1 -TestPath ".\tests\incremental-game-datetime.Tests.ps1" -OutputFile "pester\incremental-game-datetime-pester-results.xml" -CodeCoverageFile "pester\incremental-game-datetime-pester-coverage.xml"
+          .\utils\pester-agent.ps1 -TestPath ".\tests\powxn.Tests.ps1" -OutputFile "pester\powxn-pester-results.xml" -CodeCoverageFile "pester\powxn-pester-coverage.xml"
+          .\utils\pester-agent.ps1 -TestPath ".\tests\valid-phone-numbers.Tests.ps1" -OutputFile "pester\valid-phone-numbers-pester-results.xml" -CodeCoverageFile "pester\valid-phone-numbers-pester-coverage.xml"
       
       - name: Upload Pester reports
         if: ${{ success() }}

MANIFEST.adoc

@@ -8,10 +8,10 @@ https://man7.org/linux/man-pages/man1/yes.1.html[Yes (Unix)]
 
 === requirements
 
-* Feature parity.
-** Repeat a string (and newline) until killing the process.
-** Argument sets string.
-** No argument sets string to 'y'.
+* Feature parity
+** Repeat a string (and newline) until killing the process
+** Argument sets string
+** No argument sets string to 'y'
 
 === stats
 
@@ -71,3 +71,50 @@ https://codegolf.stackexchange.com/questions/52785/[Stack Exchange]
 === example use
 
 See xref:tests/incremental-game-datetime.Tests.ps1[test file].
+
+== PowXn
+
+xref:PowXn.ps1[]
+
+=== challenge
+
+https://leetcode.com/problems/powx-n/description/[Leetcode]
+
+=== requirements
+
+* Two parameters
+** Base (double)
+** Exponent (int)
+* No use of "Math.pow()" or any other prexisting power operations
+
+=== stats
+
+* 194 byte(s)
+
+=== example use case(s)
+
+See xref:tests/pownx.Tests.ps1[test file].
+
+== Valid Phone Numbers
+
+xref:valid-phone-numbers.ps1[]
+
+=== challenge
+
+https://leetcode.com/problems/valid-phone-numbers/description/[Leetcode]
+
+=== requirements
+
+* Input a text file named file.txt
+* Print "valid" phone numbers from said file
+** Valid formats are the following
+*** (xxx) xxx-xxxx
+*** xxx-xxx-xxxx
+
+=== stats
+
+* 104 bytes
+
+=== example use case(s)
+
+See xref:tests/valid-phone-numbers.Tests.ps1[test file].

PowXn.ps1

@@ -0,0 +1,9 @@
+param([double]$x,[int]$n)
+if($n -lt 0){$s=$true;[long]$e=-$n}else{$s=$false;[long]$e=$n}
+$r=1.0
+while($e) {
+    if($e -band 1){$r*=$x}
+    $e=$e -shr 1;$x*=$x
+}
+if($s){$r=1/$r}
+return $r

tests/data/phone-numbers.txt

@@ -0,0 +1,10 @@
+987-123-4567
+123 456 7890
+(123) 456-7890
+1-1-706-7938
++31 365-492-5931
+37 9-858-6497
++978-878-1324
+-686-511-4033
+1-234-567-8901
+(104 ) 456-7890

tests/powxn.Tests.ps1

@@ -0,0 +1,16 @@
+BeforeAll {
+    $leaf_name = ((Get-Item -Path $PSCommandPath).Name).Replace('.Tests.ps1','.ps1')
+    $repo_root_path = (Get-Item -Path $PSCommandPath).Directory.Parent.Fullname
+    $script_path = [System.IO.Path]::Combine($repo_root_path,$leaf_name)
+}
+Describe "incremental-game-datetime.ps1" {
+   It "Returns <expected> (<Base> to the power of <Exponent>)" -ForEach @(
+       @{ Base = 2.00000; Exponent = 10; Expected = 1024.00 }
+       @{ Base = 2.10000; Exponent =  3; Expected = 9.26100 }
+       @{ Base = 2.00000; Exponent = -2; Expected = 0.25000 }
+       @{ Base = 2.00000; Exponent =  0; Expected = 1.00000 }
+   ) {
+       [double]$result = & $script_path -x $Base -n $Exponent
+       $result | Should -BeLikeExactly $Expected
+   }
+}

tests/valid-phone-numbers.Tests.ps1

@@ -0,0 +1,14 @@
+BeforeAll {
+    $leaf_name = ((Get-Item -Path $PSCommandPath).Name).Replace('.Tests.ps1','.ps1')
+    $repo_root_path = (Get-Item -Path $PSCommandPath).Directory.Parent.Fullname
+    $script_path = [System.IO.Path]::Combine($repo_root_path,$leaf_name)
+}
+Describe "valid-phone-numbers.ps1" {
+    It "Returns valid formatted phone numbers" {
+        $data = [System.IO.Path]::Combine($repo_root_path, "tests", "data","phone-numbers.txt")
+        $result = & $script_path -f $data
+        foreach ($res in $result) {
+            $res | Should -Match '^(\d{3}-|\(\d{3}\) )\d{3}-\d{4}$'
+        }
+    }
+ }

utils/pester-agent.ps1

@@ -18,7 +18,8 @@ param (
     [String]
     $TestPath,
 
-    [Parameter(Mandatory)]
+    [Parameter()]
+    [AllowEmptyString()]
     [String]
     $OutputFile,
 
@@ -31,9 +32,11 @@ param (
 $pesterconfig = New-PesterConfiguration
 $pesterconfig.Output.Verbosity = 'Detailed'
 $pesterconfig.Run.Path = $TestPath
-$pesterconfig.TestResult.Enabled = $true
-$pesterconfig.TestResult.OutputPath = $OutputFile
-$pesterconfig.TestResult.OutputFormat = 'NUnitXml'
+if ($OutputFile) {
+    $pesterconfig.TestResult.Enabled = $true
+    $pesterconfig.TestResult.OutputPath = $OutputFile
+    $pesterconfig.TestResult.OutputFormat = 'NUnitXml'
+}
 if ($CodeCoverageFile) {
     $pesterconfig.CodeCoverage.Enabled = $true
     $pesterconfig.CodeCoverage.OutputPath = $CodeCoverageFile

valid-phone-numbers.ps1

@@ -0,0 +1,4 @@
+param($f="file.txt")
+foreach($l in gc $f){
+    if($l -match '^(\d{3}-|\(\d{3}\) )\d{3}-\d{4}$'){$l}
+}