Check if a linked list contains a cycle
Given a linked list, you are asked to check if it contains a cycle.
TODO: Should we have a tutorial here?
TODO: Determine the input format
Input
The initial data for the linked list is obtained automatically. You don’t need to do anything. It’s guaranteed that the size of the linked list does exceed and the values in the linked list don’t exceed in their absolute value.
Output
The program should print
Yes in case the linked list contains a cycle and No otherwise.Examples
Input | Output |
2 3 4 5 3 | Yes |
2 3 4 5 0 | No |
4 3 1 5 2 | Yes |
Constraints
Time limit: 0.2 seconds
Memory limit: 512 MB
Output limit: 1 MB