Regex to find words with specific character

Question

How to find all words which contain a specific letter in it?

For example, if my string is

This is a Station called South Yarra

then I

Answer 1

Solution without regex using Linq :

List arr = s.Split(' ').Where(x => x.Contains('a')).ToList();

string.Split(' ') : It return array of strings that contains the substrings in this instance that are delimited by ' '

Enumerable.Where(predicate) : Filter sequence based on predicate

Enumerable.Contains() : Determines whether a sequence contains a specified element

POC: .net Fiddle