private int[] FindSuffixes(string pattern)
        {
            int f = 0, g;

            int patternLength = pattern.Length;
            int[] suffixes = new int[pattern.Length + 1];

            suffixes[patternLength - 1] = patternLength;
            g = patternLength - 1;
            for (int i = patternLength - 2; i >= 0; --i)
            {
                if (i > g && suffixes[i + patternLength - 1 - f] < i - g)
                    suffixes[i] = suffixes[i + patternLength - 1 - f];
                else
                {
                    if (i < g)
                        g = i;
                    f = i;
                    while (g >= 0 && (pattern[g] == pattern[g + patternLength - 1 - f]))
                        --g;
                    suffixes[i] = f - g;
                }
            }

            return suffixes;
        }