Week 01: contains-duplicate solution

Author: mandel-17

contains-duplicate/mandel-17.py

@@ -0,0 +1,13 @@
+from typing import List
+
+class Solution:
+    def containsDuplicate(self, nums: List[int]) -> bool:
+        stack_list = []
+        for i, n in enumerate(nums[:-1]):
+            stack_list.append(n)
+            if nums[i+1] in stack_list:
+                return True
+            else:
+                if i == len(nums[:-2]):
+                  return False
+                continue