marcgeld

/*

Objective 
Today, we're learning about the Array data structure. Check out the Tutorial tab for learning materials and an instructional video!

Task 
Given an array of integers, print 's elements in reverse order as a single line of space-separated numbers.

Input Format

marcgeld

/*

Objective 
Today, we're learning about Key-Value pair mappings using a Map or Dictionary data structure. Check out the Tutorial tab for learning materials and an instructional video!

Task 
Given  names and phone numbers, assemble a phone book that maps friends' names to their respective phone numbers. You will then be given an unknown number of names to query your phone book for. For each queried, print the associated entry from your phone book on a new line in the form name=phoneNumber; if an entry for  is not found, print Not found instead.

Note: Your phone book should be a Dictionary/Map/HashMap data structure.

marcgeld

# PowerShell Collections HashTables (Dictionaries)

[Hashtable] $firstTable = @{
	mykey = "myvalue"
    label = "value"
    akey = ”cat”
    someOtherKey = "dog"
    intValueKey = 123
}

marcgeld

# Calculate Hashcode from byteArray

function Get-HashcodeFromByteArray {

	[CmdletBinding()]
    Param (
		[Parameter(Mandatory=$true)]
        [byte[]] $byteArray = $(Throw("-byteArray is required")),
        [ValidateSet("sha256","md5")]
        [string]$algorithm=("sha256")

marcgeld

# Compress and decompress byte array
  
function Get-CompressedByteArray {

	[CmdletBinding()]
    Param (
	[Parameter(Mandatory,ValueFromPipeline,ValueFromPipelineByPropertyName)]
        [byte[]] $byteArray = $(Throw("-byteArray is required"))
    )
	Process {

marcgeld

# Create and print xml document

[System.Xml.XmlDocument] $xml =
@'
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<root>
<a><b><c><d text="Hello" /> </c></b></a>
<a><b><c><d text=" " /> </c></b></a>
<a><b><c><d text="World" /> </c></b></a>
</root>

marcgeld

# Date format

Write-Host "Date: "( Get-Date -f 'yyyy-MM-dd HH:mm:ss' | Out-String )
Write-Host "Date: "( Get-Date -f 'dddd dd MMMM yyyy HH:mm' | Out-String )

marcgeld

# base64 encode / decode

$bytes = [System.Text.Encoding]::UTF8.GetBytes( "Write-Host Hello World")
$base64 = [Convert]::ToBase64String( $bytes )
Write-Host "Base64 encoded: "( $base64 )

$base64Decoded = [Convert]::FromBase64String( $base64 )
Write-Host "Base64 decoded: "( $base64Decoded )

$decodedText = [System.Text.Encoding]::UTF8.GetString( $base64Decoded )

marcgeld

# Hashtable

[Hashtable] $hTable = @{
	mykey = "myvalue"
}

Write-Host "Table: " ( $hTable | Format-Table | Out-String )

#Write-Host "Enumerator: " (  | Format-Table | Out-String )

marcgeld

# Generate a random Alphanumeric string

Function Get-RandomAlphanumericString {
	
	[CmdletBinding()]
	Param (
        [int] $length = 8
	)

	Begin{