Course Schedule
Updated Feb 24, 2026
Problem
Return true if all courses can be finished.
Constraints
1 <= numCourses <= 2000
Examples
Example 1
Input:
{"numCourses": 2, "prerequisites": [[1, 0]]}
Output:
true
Function Signature
def canFinish(self, numCourses: int, prerequisites: list[list[int]]) -> bool
How to Submit
Implement a Solution class with a canFinish method.
Your method will be called with the input parameters and should return the answer.