feat(content): more test cases

backend/data/questions/coin-change.yaml

@@ -9,6 +9,26 @@ categories:
 patterns:
   - dynamic-programming
 
+function_signature: "def coin_change(coins: list[int], amount: int) -> int:"
+
+test_cases:
+  visible:
+    - input: { coins: [1, 2, 5], amount: 11 }
+      expected: 3
+    - input: { coins: [2], amount: 3 }
+      expected: -1
+    - input: { coins: [1], amount: 0 }
+      expected: 0
+  hidden:
+    - input: { coins: [1], amount: 1 }
+      expected: 1
+    - input: { coins: [1, 3, 4], amount: 6 }
+      expected: 2
+    - input: { coins: [2, 5, 10], amount: 7 }
+      expected: 2
+    - input: { coins: [186, 419, 83, 408], amount: 6249 }
+      expected: 20
+
 description: |
   You are given an integer array `coins` representing coins of different denominations and an integer `amount` representing a total amount of money.