I'm trying to merge sort a list of strings in c#. I've got a list of movie titles I need to merge sort and it is returning the list back to me in the same unsorted format as the original list I pass into the method. I'm still fairly new to c# programming so I'm sure I'm just missing something here. Any advice would be greatly appreciated. Thank you!

I have included screenshots of the main arg where I am calling my merge sort method, as well as both parts of the merge sort method(s) and a picture of the results(displayed as unsorted on the righthand side, and the merge sorted list on the lefthand side).
 

 

 

case 2: //merge sort List mergeSortedList = new List (unsortedTitles); mergeSort (mergeSortedList); Console.Clear(); Console.WriteLine("Merge Sort"); Console.WriteLine("- for (int i = 0; i < listLength; i++) { } Console.Write(unsorted Titles [i]); Console.CursorLeft = 50; Console.Write(mergeSorted List[i]); Console.WriteLine(" "); Console.WriteLine("- -"); -");