feat(content): more test cases

backend/data/questions/longest-consecutive-sequence.yaml

@@ -9,6 +9,24 @@ categories:
 patterns:
   - union-find
 
+function_signature: "def longest_consecutive(nums: list[int]) -> int:"
+
+test_cases:
+  visible:
+    - input: { nums: [100, 4, 200, 1, 3, 2] }
+      expected: 4
+    - input: { nums: [0, 3, 7, 2, 5, 8, 4, 6, 0, 1] }
+      expected: 9
+  hidden:
+    - input: { nums: [] }
+      expected: 0
+    - input: { nums: [1, 0, 1, 2] }
+      expected: 3
+    - input: { nums: [9, 1, 4, 7, 3, -1, 0, 5, 8, -1, 6] }
+      expected: 7
+    - input: { nums: [1] }
+      expected: 1
+
 description: |
   Given an unsorted array of integers `nums`, return *the length of the longest consecutive elements sequence*.