Solution to Reddit Daily Programmer #238 - Consonants and Vowels

make-words.ps1

#https://www.reddit.com/r/dailyprogrammer/comments/3q9vpn/20151026_challenge_238_easy_consonants_and_vowels/
#Create random "words" based on a defined input pattern.

#Define the alphabet.
$consonants= "b","c","d","f","g","h","j","k","l","m","n","p","q","r","s","t","v","w","x","y","z"
$vowels = "a","e","i","o","u"

#Get input from the user.
$userInput = Read-Host "Enter the pattern"
$goodInput = $true

#Validate the input.
$userArray = $userInput.ToCharArray()
foreach($letter in $userArray) {
    if(([string]$letter).ToLower() -ne "c" -and ([string]$letter).ToLower() -ne "v") {
        Write-Host "Invalid input! Please use only 'c', 'C', 'v', and 'V'!"
        $goodInput = $false
        break
    }
}

#Proceed if we've made it this far.
if($goodInput) {
    $result = ""
    foreach($letter in $userArray) {
        if($letter -ceq 'c') {
            #Select a random lowercase consonant.
            $result += $consonants[(Get-Random -Minimum 0 -Maximum ($consonants.Length - 1))]
        } elseif($letter -ceq 'C') {
            #Select a random uppercase consonant.
            $result += ($consonants[(Get-Random -Minimum 0 -Maximum ($consonants.Length - 1))]).ToUpper()
        } elseif($letter -ceq 'v') {
            #Select a random lowercase vowel.
            $result += $vowels[(Get-Random -Minimum 0 -Maximum ($vowels.Length - 1))]
        } elseif($letter -ceq 'V') {
            #Select a random uppercase vowel.
            $result += ($vowels[(Get-Random -Minimum 0 -Maximum ($vowels.Length - 1))]).ToUpper()
        }
    }

    #Write the result.
    Write-Host $result
}