2 in python please

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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2 in python please
Complete the following hasCycle function that takes the head of a singly linear linked list as an
input and as output to determine if a particular node can be reached again and again. We denote
it as a cyclic linked list. If the linked list has a cycle, return True, otherwise, return False.
Importantly, no nodes should be constructed in the implementation of the method.
Hint: You can take the help of multiple data structures to solve this problem and assume
the list will have a maximum of 1000 nodes.
Python:
def hasCycle(head):
# Write your code here
Java:
public boolean hasCycle(Node head) {
// Write your code here
}
Sample Input
head
15 --> 41 --> 33 --> -43 --
head
V
15 --> 41 --> 33 -->-43--> None
Sample Explanation
Output
True
False
There is a cycle in the linked list
where the node at index 1 can be
reached again and again.
There is no cycle in the linked list
where a particular node can be
reached again and again.
Transcribed Image Text:Complete the following hasCycle function that takes the head of a singly linear linked list as an input and as output to determine if a particular node can be reached again and again. We denote it as a cyclic linked list. If the linked list has a cycle, return True, otherwise, return False. Importantly, no nodes should be constructed in the implementation of the method. Hint: You can take the help of multiple data structures to solve this problem and assume the list will have a maximum of 1000 nodes. Python: def hasCycle(head): # Write your code here Java: public boolean hasCycle(Node head) { // Write your code here } Sample Input head 15 --> 41 --> 33 --> -43 -- head V 15 --> 41 --> 33 -->-43--> None Sample Explanation Output True False There is a cycle in the linked list where the node at index 1 can be reached again and again. There is no cycle in the linked list where a particular node can be reached again and again.
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