Update find-the-duplicate-number.py

rhshriva · Sep 28, 2015 · 9c53ed2 · 9c53ed2
1 parent 3c62fc7
commit 9c53ed2
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/Python/find-the-duplicate-number.py b/Python/find-the-duplicate-number.py
@@ -9,7 +9,9 @@ def findDuplicate(self, nums):
         :rtype: int
         """
         # Treat each (key, value) pair of the array as the (pointer, next) node of the linked list,
-        # thus the duplicated number will be the begin of the cycle in the linked list.:
+        # thus the duplicated number will be the begin of the cycle in the linked list.
+        # Besides, there is always a cycle in the linked list which
+        # starts from the first element of the array.
         slow = nums[0]
         fast = nums[nums[0]]
         while slow != fast: