diff --git a/python/0128-longest-consecutive-sequence.py b/python/0128-longest-consecutive-sequence.py
index 4a2168ba4..bbf7ab308 100644
--- a/python/0128-longest-consecutive-sequence.py
+++ b/python/0128-longest-consecutive-sequence.py
@@ -11,3 +11,18 @@ def longestConsecutive(self, nums: List[int]) -> int:
                     length += 1
                 longest = max(length, longest)
         return longest
+    def longestConsecutiveNoRepeat(self, nums: List[int]) -> int:
+        numSet = set(nums)
+        longest = 0 
+        while len(numSet) > 0:
+            cur = 0
+            i = numSet.pop()
+            numSet.add(i)
+            while i - 1 in numSet:
+                i -= 1
+            while i in numSet:
+                numSet.remove(i)
+                cur += 1
+                i += 1
+            longest = max(cur, longest)
+        return longest