leetcode

leetcode/217.py

@@ -0,0 +1,11 @@
+class Solution:
+    def containsDuplicate(self, nums: List[int]) -> bool:
+        l=set()
+        isDu=False
+        for i in nums:
+            if i in l:
+                isDu=True
+                break
+            else:
+                l.add(i)
+        return isDu