How to insert spaces between characters using Regex?

Question

Trying to learn a little more about using Regex (Regular expressions). Using Microsoft\'s version of Regex in C# (VS 2010), how could I take a simple string like:

Answer 1

It's very simple. To match any character use . dot and then replace with that character along with one extra space

Here parenthesis (...) are used for grouping that can be accessed by $index

Find what : "(.)"

Replace with "$1 "

DEMO