feat(content): more test cases

backend/data/questions/course-schedule.yaml

@@ -9,6 +9,24 @@ patterns:
   - dfs
   - bfs
 
+function_signature: "def can_finish(num_courses: int, prerequisites: list[list[int]]) -> bool:"
+
+test_cases:
+  visible:
+    - input: { num_courses: 2, prerequisites: [[1, 0]] }
+      expected: true
+    - input: { num_courses: 2, prerequisites: [[1, 0], [0, 1]] }
+      expected: false
+    - input: { num_courses: 3, prerequisites: [[1, 0], [2, 1]] }
+      expected: true
+  hidden:
+    - input: { num_courses: 1, prerequisites: [] }
+      expected: true
+    - input: { num_courses: 4, prerequisites: [[1, 0], [2, 1], [3, 2], [1, 3]] }
+      expected: false
+    - input: { num_courses: 5, prerequisites: [[1, 0], [2, 0], [3, 1], [4, 2]] }
+      expected: true
+
 description: |
   There are a total of `numCourses` courses you have to take, labeled from `0` to `numCourses - 1`. You are given an array `prerequisites` where `prerequisites[i] = [a`<sub>`i`</sub>`, b`<sub>`i`</sub>`]` indicates that you **must** take course `b`<sub>`i`</sub> first if you want to take course `a`<sub>`i`</sub>.