feat(content): more test cases

backend/data/questions/product-of-array-except-self.yaml

@@ -8,6 +8,24 @@ categories:
 patterns:
   - prefix-sum
 
+function_signature: "def product_except_self(nums: list[int]) -> list[int]:"
+
+test_cases:
+  visible:
+    - input: { nums: [1, 2, 3, 4] }
+      expected: [24, 12, 8, 6]
+    - input: { nums: [-1, 1, 0, -3, 3] }
+      expected: [0, 0, 9, 0, 0]
+  hidden:
+    - input: { nums: [2, 3] }
+      expected: [3, 2]
+    - input: { nums: [1, 1, 1, 1] }
+      expected: [1, 1, 1, 1]
+    - input: { nums: [0, 0] }
+      expected: [0, 0]
+    - input: { nums: [5, -2, 4] }
+      expected: [-8, 20, -10]
+
 description: |
   Given an integer array `nums`, return an array `answer` such that `answer[i]` is equal to the product of all the elements of `nums` except `nums[i]`.