Question

What’s the easiest way to parse a string and extract a number and a letter? I have string that can be in the following format (number|letter or letter|number), i.e ’10A’, ‘B5’, ‘C10’, ‘1G’, etc.

I need to extract the 2 parts, i.e. ’10A’ -> ’10’ and ‘A’.

Update: Thanks to everyone for all the excellent answers

Answer 1

Easiest way is probably to use regular expressions.

((?<number>\d+)(?<letter>[a-zA-Z])|(?<letter>[a-zA-Z])(?<number>\d+)) 

You can then match it with your string and extract the value from the groups.

Match match = regex.Match('10A'); string letter = match.Groups['letter'].Value; int number = int.Parse(match.Groups['number'].Value);