Active Directory and Powershell - windows

Question

I'm currently rewriting a script that is in VB into a Powershell script.
What the script does is search our Active Directory for a user based on the script-users input.
Function PromptForName{
$nameInput = "*"
$nameInput += Read-Host ("Please enter a full or partial name.")
$nameInput += "*"
return $nameInput
}
Function FindUsers{
param ([string]$n)
$usersArray = Get-ADUser -f {DisplayName -like $n} | Select-Object Name
return $usersArray
}
This code will print out the correct list of names. What I then want to do is allow the user to choose one of those names, and have more information about that person. I'm stuck at allowing the script-user to select one of those names.
How can I prompt for another input; where the box will display a numbered list of all the names that FindUsers gave, and then return a number based on which user they chose? I'm completely lost.
This is currently how I am trying to do it, although I'm pretty sure it's completely wrong.
Function PrintUsers{
param $a
[int]$i, $j
[string]$userList
$j = 1
foreach($object in $array){
$userList += ($j + $array[$i])
$j++
}
return $userList
}
Function SelectUser{
param $list
$user = Read-Host ($list)
}
EDIT:
I have updated my functions to the following:
Function FindUsers{
param ([string]$n)
$usersArray = #(Get-ADUser -f {DisplayName -like $n} | Select-Object Name| Format-List)
return $usersArray
}
Function PrintUsers{
param ([String[]]$array)
$i
for($i = 1; $i -lt $usersArray.length; $i++){
Write-Host "$i. $($usersArray[$i-1].Name)"
}
}
The output after FindUsers is like this:
Name : xxxxx yyyyy
Name : xxxxx zzzzz
etc.
So the return of $usersArray is printing all that.
I don't want any printing until the PrintUsers function, and I want it to be in a numbered list type format like this:
1. xxxx yyyy
2. xxxx zzzz
etc.
I'm having the most difficult time figuring this out.

Answer 1

# get all users
$usersArray = #(Get-ADUser -f {DisplayName -like $n} )
# create menu
for($i=1; $i -le $usersArray.count; $i++){
Write-Host "$i. $($usersArray[$i-1].Name)"
}
# prompt for user number
$user = Read-Host Enter the user number to get more info
# display full info for selected user
$usersArray[$user-1] | Format-List *

Answer 2

Use Add-Member to add a unique identifier to each user. Let's treat processes as if they're user objects, for the sake of example:
$procs = gps;
$procs = $procs | % { $i=0; } {
Add-Member -MemberType NoteProperty -InputObject $_ -Name Number -Value $i -PassThru;
$i++;
};
$procs | select Number,Name;
$procid = Read-Host -Prompt 'Enter the number of the process you would like to operate on';
$proc = $procs | ? { $_.Number -eq $procid };
Write-Host -Object ('Operating on proc: {0}' -f $proc.Name);