using System;
using System.Text.RegularExpressions;
class MainClass {
private static void DisplayMatches(string text,string regularExpressionString) {
Console.WriteLine("using the following regular expression: " +regularExpressionString);
MatchCollection myMatchCollection = Regex.Matches(text, regularExpressionString);
foreach (Match myMatch in myMatchCollection) {
Console.WriteLine(myMatch);
}
}
public static void Main() {
string text ="knife knock five";
Console.WriteLine("Matching words that contain 'k' or 'f'");
DisplayMatches(text, @"\S*[kf]\S*");
}
}
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