I have been trying to gain more understanding and experience in the NPL area and to get some more practice. I decided to attempt to create a simple high-level analysis program.

Here's what I'm trying to do:

  • Add a function that allows me to read in a full document (wordpad) instead of Console.Readline(); with CMD input
  • Improve organization, cleaner, or shorter code
  • Count words

The Code:

namespace HOMEWORK
    class Program
        static void Main(string[] args) //2 foreach() 2 for() 4 if() 28 .methods//
            LinkedList<MatchCounter> matchCounters = new LinkedList<MatchCounter>();
            string[] currentPats = new[] { "the", "in" };
            StringBuilder SB = new StringBuilder(); 

            for (int i = 0; i < currentPats.Length; i++)

            Regex regexx = new Regex(SB.ToString(), RegexOptions.Compiled);
            Console.WriteLine("CURRENT PATTERN: {0}", regexx);

            string input = Console.ReadLine(); 
            Console.WriteLine("input: {0} ", input);

            foreach (Match match in regexx.Matches(input).Cast<Match>())  
                for (var i = 0; i < currentPats.Length; i++)
                    Group group = match.Groups["p" + i]; 

                    if (!group.Success)

                    if (group.Value != "") 
                        bool isFound = false;

                        foreach (MatchCounter copy in matchCounters)
                            if (copy.GetSyllable() == group.Value)
                                isFound = true;

                        if (!isFound)
                            matchCounters.AddLast(new MatchCounter(group.Value));

                    Console.WriteLine("Matched pattern #{0}: '{1}' at index {2}", i, group.Value, group.Index);


    public class MatchCounter
        int count;
        string syllable;

        public MatchCounter(string Syl)
            count = 1;
            syllable = Syl;

        public string GetSyllable()
            return syllable;

        public void Increment()

        public int GetCount()
            return count;

I am still a learner and would like my code to be reviewed with feedback. I would greatly appreciate any feedback about the code quality, performance or any other possible corrections or how to do things differently.

  • 1
    \$\begingroup\$ I downvoted your question because you did not explain how the algorithm works and what you are doing exactly and how. You also did not provide any examples. \$\endgroup\$
    – t3chb0t
    Dec 9, 2017 at 22:29
  • \$\begingroup\$ You should know that in most regex flavours look arounds are not quantifiable. The .Net implementation is one of the only ones I know of that allows for an optional lookahead. There's also no point in it. Just make your group optional. Can you explain what you're trying to achieve? \$\endgroup\$
    – RobH
    Dec 11, 2017 at 10:27
  • \$\begingroup\$ Please edit where you say NPL to NLP, I would but I can't change that few characters a.k.a. 2 \$\endgroup\$
    – 13ros27
    Dec 17, 2017 at 14:08


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