I have the following string:
string input = " 2 1";
It is 2 spaces followed by a 2 and then 2 more spaces followed by a 1. I want to do a replace on it, but I only want to replace the spaces between the 2 and the 1 with 0's and I do not want to use RegEx if possible?
The end result should look like this:
string result = " 2001";