Copy-Paste in reverse?

[rogerthatman]

Hello everyone,
Not sure this is should be in the programming section, but still I wonder if there is any easy way to copy numbers and then paste them backwards.
Like I have these numbers:
1
2
3
4
5

And I want to copy-paste them just like this:
5
4
3
2
1


The thing is, I have 6331 numbers like that, so I can't do it manually.
Any help will be appreciated.