diff --git a/Longestconsecutivesequence.py b/Longestconsecutivesequence.py
new file mode 100644
index 000000000000..0620c5ff339e
--- /dev/null
+++ b/Longestconsecutivesequence.py
@@ -0,0 +1,16 @@
+def longest_consecutive_sequence(arr):
+    heap = []
+    for num in arr:
+        heapq.heappush(heap, num)
+    max_len = 0
+    curr_len = 1
+    while heap:
+        num = heapq.heappop(heap)
+        if heap and num == heap[0]-1:
+            curr_len += 1
+        elif curr_len > 1:
+            max_len = max(max_len, curr_len)
+            curr_len = 1
+    if curr_len > 1:
+        max_len = max(max_len, curr_len)
+    return max_len