PlotMyFace.Location.ReverseRange C# (CSharp) Метод

        public static void ReverseRange(Location[] locations, int startIndex, int endIndex)
        {
            if (locations == null)
                throw new ArgumentNullException("locations");

            if (startIndex < 0 || startIndex >= locations.Length)
                throw new ArgumentOutOfRangeException("startIndex");

            if (endIndex < 0 || endIndex >= locations.Length)
                throw new ArgumentOutOfRangeException("endIndex");

            if (endIndex < startIndex)
            {
                int temp = endIndex;
                endIndex = startIndex;
                startIndex = temp;
            }

            while(startIndex<endIndex)
            {
                Location temp = locations[endIndex];
                locations[endIndex] = locations[startIndex];
                locations[startIndex] = temp;

                startIndex++;
                endIndex--;
            }
        }

        public static void MutateRandomLocations(Location[] locations)
        {
            if (locations == null)
            {
                throw new ArgumentNullException("locations");
            }

            if (locations.Length < 2)
            {
                throw new ArgumentException("The locations array must have at least two items.", "locations");
            }

            // I opted to give up to 10% of the chromosome size in number of mutations.
            // Maybe I should find a better number of make this configurable.
            int mutationCount = GetRandomValue(locations.Length / 10) + 1;

            for (int mutationIndex = 0; mutationIndex < mutationCount; mutationIndex++)
            {
                int index1 = GetRandomValue(locations.Length);
                int index2 = GetRandomValue(locations.Length - 1);
                if (index2 >= index1)
                {
                    index2++;
                }

                switch (GetRandomValue(3))
                {
                case 0: Location.SwapLocations(locations, index1, index2); break;

                case 1: Location.MoveLocations(locations, index1, index2); break;

                case 2: Location.ReverseRange(locations, index1, index2); break;

                default: throw new InvalidOperationException();
                }
            }
        }