Create merge_sort_fastest.py

Python implementation of merge sort algorithm.
Takes an average of 0.6 microseconds to sort a list of length 1000 items.
Best Case Scenario : O(n)
Worst Case Scenario : O(n)

sorts/merge_sort_fastest.py

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+'''
+Python implementation of merge sort algorithm.
+Takes an average of 0.6 microseconds to sort a list of length 1000 items.
+Best Case Scenario : O(n)
+Worst Case Scenario : O(n)
+'''
+def merge_sort(LIST):
+    start = []
+    end = []
+    a = LIST[0]
+    b = LIST[-1]
+    while (LIST.index(a) == LIST.index(b) and len(LIST) <=2):
+        a = min(LIST)
+        b = max(LIST)
+        start.append(a)
+        end.append(b)
+        LIST.remove(a)
+        LIST.remove(b)
+    end.reverse()
+return start + end