brute_force_string_matching.cs

using System;
using System.Text;
 
 
namespace BruteForceStringMatching
{
    class Program
    {
        static void Main(string[] args)
        {
 
            String sampleText = "Lorem sag ipsum dolsagitor sagittis amet.";
 
            String searchPattern = "sagittis";
 
            StringMatch(sampleText, searchPattern);
 
            Console.Read();
 
        }
        static int StringMatch(String T, String P)
        {
            int n = T.Length;
            int m = P.Length;
 
            for (int i = 0; i < (n - m); i++)
            {
                int j = 0;
                while (j < m && P[j] == T[i + j])
                {
                    j++;
                }
                if (j == m)
                {
                    Console.WriteLine("Pattern found at position " + i);
                    return i;
                }
            }
            Console.WriteLine("Pattern not found");
            return -1;
        }
    }
}