217 Contains Duplicate

easy/217 Contains Duplicate/solution.py

@@ -0,0 +1,12 @@
+class Solution:
+    def containsDuplicate(self, nums: List[int]) -> bool:
+        count = {}
+
+        for num in nums:
+            if num in count:
+                return True
+            else:
+                count[num] = 1
+        
+        return False
+