feat(content): more test cases

backend/data/questions/remove-duplicates-from-sorted-array.yaml

@@ -9,6 +9,24 @@ categories:
 patterns:
   - two-pointers
 
+function_signature: "def remove_duplicates(nums: list[int]) -> int:"
+
+test_cases:
+  visible:
+    - input: { nums: [1, 1, 2] }
+      expected: 2
+    - input: { nums: [0, 0, 1, 1, 1, 2, 2, 3, 3, 4] }
+      expected: 5
+    - input: { nums: [1, 2, 3] }
+      expected: 3
+  hidden:
+    - input: { nums: [1] }
+      expected: 1
+    - input: { nums: [1, 1, 1, 1, 1] }
+      expected: 1
+    - input: { nums: [-1, 0, 0, 1, 1, 2] }
+      expected: 4
+
 description: |
   Given an integer array `nums` sorted in **non-decreasing order**, remove the duplicates *in-place* such that each unique element appears only **once**. The **relative order** of the elements should be kept the **same**.