feat(content): hidden test cases

backend/data/questions/check-if-word-occurs-as-prefix.yaml

@@ -8,6 +8,28 @@ categories:
 patterns:
   - two-pointers
 
+function_signature: "def is_prefix_of_word(sentence: str, search_word: str) -> int:"
+
+test_cases:
+  visible:
+    - input: { sentence: "i love eating burger", search_word: "burg" }
+      expected: 4
+    - input: { sentence: "this problem is an easy problem", search_word: "pro" }
+      expected: 2
+    - input: { sentence: "i am tired", search_word: "you" }
+      expected: -1
+  hidden:
+    - input: { sentence: "hello", search_word: "hello" }
+      expected: 1
+    - input: { sentence: "hello world", search_word: "world" }
+      expected: 2
+    - input: { sentence: "a b c", search_word: "a" }
+      expected: 1
+    - input: { sentence: "abc def ghi", search_word: "xyz" }
+      expected: -1
+    - input: { sentence: "hellohello", search_word: "ell" }
+      expected: -1
+
 description: |
   Given a `sentence` that consists of some words separated by a **single space**, and a `searchWord`, check if `searchWord` is a prefix of any word in `sentence`.