feat(content): more test cases

backend/data/questions/remove-element.yaml

@@ -9,6 +9,24 @@ categories:
 patterns:
   - two-pointers
 
+function_signature: "def remove_element(nums: list[int], val: int) -> int:"
+
+test_cases:
+  visible:
+    - input: { nums: [3, 2, 2, 3], val: 3 }
+      expected: 2
+    - input: { nums: [0, 1, 2, 2, 3, 0, 4, 2], val: 2 }
+      expected: 5
+    - input: { nums: [1], val: 1 }
+      expected: 0
+  hidden:
+    - input: { nums: [], val: 0 }
+      expected: 0
+    - input: { nums: [1, 2, 3, 4, 5], val: 6 }
+      expected: 5
+    - input: { nums: [4, 4, 4, 4], val: 4 }
+      expected: 0
+
 description: |
   Given an integer array `nums` and an integer `val`, remove all occurrences of `val` in `nums` **in-place**. The order of the elements may be changed. Then return *the number of elements in* `nums` *which are not equal to* `val`.