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46 lines
1.5 KiB
PowerShell
Executable File
46 lines
1.5 KiB
PowerShell
Executable File
<#
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.SYNOPSIS
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Measures the speed of BubbleSort
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.DESCRIPTION
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This PowerShell script measures the speed of the BubbleSort algorithm.
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BubbleSort is a simple sorting algorithm that repeatedly steps through the list,
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compares adjacent elements and swaps them if they are in the wrong order. The pass
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through the list is repeated until the list is sorted. The algorithm, which is a
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comparison sort, is named for the way smaller or larger elements "bubble" to the top of the list.
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.PARAMETER numIntegers
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Specifies the number of integers to sort
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.EXAMPLE
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PS> ./measure-BubbleSort.ps1
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🧭 0.729 sec to sort 1000 integers by BubbleSort
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.LINK
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https://github.com/fleschutz/PowerShell
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.NOTES
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Author: Markus Fleschutz | License: CC0
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#>
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param([int]$numIntegers = 1000)
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class BubbleSort {
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static Sort($targetList) {
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$n = $targetList.Count
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for ($i = 0; $i -lt $n; $i+=1) {
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for ($j = 0; $j -lt $n-1; $j+=1) {
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if($targetList[$j] -gt $targetList[$j+1]) {
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$temp = $targetList[$j+1]
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$targetList[$j+1]=$targetList[$j]
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$targetList[$j]=$temp
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}
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}
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}
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}
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}
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$list = (1..$NumIntegers | foreach{Get-Random -minimum 1 -maximum $numIntegers})
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$stopWatch = [system.diagnostics.stopwatch]::startNew()
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[BubbleSort]::Sort($list)
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[float]$elapsed = $stopWatch.Elapsed.TotalSeconds
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$elapsed3 = "{0:N3}" -f $elapsed # formatted to 3 decimal places
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"🧭 $elapsed3 sec to sort $numIntegers integers by BubbleSort"
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exit 0 # success
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