The implementation is based on the following two instance variables: int count;

Q: The implementation is based on the following two instance variables: int count;

we can achive all the four operations using the O(1) Push : push() we can insert the element in the in starting so we can achive this using the O(1) and POP: we can remove the elements at starting which can be done by O(1) Empty: and isEmpty() by checking the head==null this also can be done O(1) Top: Top we can return startig element

ID: 3906966 • Letter: T

Question

The implementation is based on the following two instance variables:

int count;

Stack_entry entry[maxstack];

It is easy to see that methods push, pop, top and empty have a time complexity of O(1). Assume that we now want to implement the same stack using the linked implementation given in “Linked List” under Lecture 1 in D2L. The implementation is based on the following two instance variables:

int count;

Node<List_entry> *head;

Can we achieve the same level of time complexity for each of the four methods in the linked stack? Briefly explain your answer

Explanation / Answer

we can achive all the four operations using the O(1)

Push :

push() we can insert the element in the in starting so we can achive this using the O(1) and

POP:

we can remove the elements at starting which can be done by O(1)

Empty:

and isEmpty() by checking the head==null this also can be done O(1)

Top:

Top we can return startig element

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The implementation is based on the following two instance variables: int count;

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