mirror of
https://github.com/fleschutz/PowerShell.git
synced 2024-11-29 03:13:55 +01:00
46 lines
1.5 KiB
PowerShell
Executable File
46 lines
1.5 KiB
PowerShell
Executable File
<#
|
|
.SYNOPSIS
|
|
Measures the speed of BubbleSort
|
|
.DESCRIPTION
|
|
This PowerShell script measures the speed of the BubbleSort algorithm.
|
|
BubbleSort is a simple sorting algorithm that repeatedly steps through the list,
|
|
compares adjacent elements and swaps them if they are in the wrong order. The pass
|
|
through the list is repeated until the list is sorted. The algorithm, which is a
|
|
comparison sort, is named for the way smaller or larger elements "bubble" to the top of the list.
|
|
.PARAMETER numIntegers
|
|
Specifies the number of integers to sort
|
|
.EXAMPLE
|
|
PS> ./measure-BubbleSort.ps1
|
|
🧭 0.729 sec to sort 1000 integers by BubbleSort
|
|
.LINK
|
|
https://github.com/fleschutz/PowerShell
|
|
.NOTES
|
|
Author: Markus Fleschutz | License: CC0
|
|
#>
|
|
|
|
param([int]$numIntegers = 1000)
|
|
|
|
class BubbleSort {
|
|
static Sort($targetList) {
|
|
$n = $targetList.Count
|
|
|
|
for ($i = 0; $i -lt $n; $i+=1) {
|
|
for ($j = 0; $j -lt $n-1; $j+=1) {
|
|
if($targetList[$j] -gt $targetList[$j+1]) {
|
|
$temp = $targetList[$j+1]
|
|
$targetList[$j+1]=$targetList[$j]
|
|
$targetList[$j]=$temp
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$list = (1..$NumIntegers | foreach{Get-Random -minimum 1 -maximum $numIntegers})
|
|
$stopWatch = [system.diagnostics.stopwatch]::startNew()
|
|
[BubbleSort]::Sort($list)
|
|
[float]$elapsed = $stopWatch.Elapsed.TotalSeconds
|
|
$elapsed3 = "{0:N3}" -f $elapsed # formatted to 3 decimal places
|
|
"🧭 $elapsed3 sec to sort $numIntegers integers by BubbleSort"
|
|
exit 0 # success
|