jump.ps1

<#

Author:            Doug Finke
Email:             finked@hotmail.com

Blog:              https://dfinke.github.io/
Twitter:           https://twitter.com/dfinke
GitHub:            https://github.com/dfinke
YouTube:           https://www.youtube.com/dougfinke

PowerShell Meetup: https://www.meetup.com/NycPowershellMeetup/

LinkedIn:          https://www.linkedin.com/in/douglasfinke/
#>

param(
    $number
)

$map = @{
    '1' = '9'
    '2' = '8'
    '3' = '7'
    '4' = '6'
    '5' = '0'
    '6' = '4'
    '7' = '3'
    '8' = '2'
    '9' = '1'
    '0' = '5'
}

-join (
    $number.ToCharArray() | ForEach-Object {
        $key = $_.ToString()
        if ($map.ContainsKey($key)) {
            $map.$key 
        } 
        else {
            $key
        }
    }
)