feat(content): hidden test cases

backend/data/questions/regular-expression-matching.yaml

@@ -10,6 +10,28 @@ categories:
 patterns:
   - dynamic-programming
 
+function_signature: "def is_match(s: str, p: str) -> bool:"
+
+test_cases:
+  visible:
+    - input: { s: "aa", p: "a" }
+      expected: false
+    - input: { s: "aa", p: "a*" }
+      expected: true
+    - input: { s: "ab", p: ".*" }
+      expected: true
+  hidden:
+    - input: { s: "a", p: "a" }
+      expected: true
+    - input: { s: "a", p: "." }
+      expected: true
+    - input: { s: "", p: "a*" }
+      expected: true
+    - input: { s: "aab", p: "c*a*b" }
+      expected: true
+    - input: { s: "mississippi", p: "mis*is*p*." }
+      expected: false
+
 description: |
   Given an input string `s` and a pattern `p`, implement regular expression matching with support for `'.'` and `'*'` where: