Stack using LinkedList (Concept+ Java Code ) | Time Complexity | DSA using Java #20

Publicado em: 09 Setembro 2021
no canal de: ForMyScholars

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Implementation of Stack using LinkedList | Time Complexity | DSA using Java 2021(Stack using ll)

A stack can be easily implemented through the linked list. In stack Implementation, a stack contains a top pointer. which is the “head” of the stack where pushing and popping items happen at the head of the list. the first node has null in the link field and second node-link have the first node address in the link field and so on and the last node address in the “top” pointer.
The main advantage of using a linked list over an array is that it is possible to implement a stack that can shrink or grow as much as needed. Using an array will put a restriction to the maximum capacity of the array which can lead to stack overflow. Here each new node will be dynamically allocated. so overflow is not possible.

Stack Operations:
push() : Insert the element into linked list nothing but which is the top node of Stack.
pop() : Return top element from the Stack and move the top pointer to the second node of linked list or Stack.
peek(): Return the top element.
display(): Print all element of Stack.

Advantage of stack using LinkedList over stack using Array:
The major problem with the stack implemented using an array is, it works only for a fixed number of data values. That means the amount of data must be specified at the beginning of the implementation itself. Stack implemented using an array is not suitable, when we don't know the size of data which we are going to use. A stack data structure can be implemented by using a linked list data structure. The stack implemented using linked list can work for an unlimited number of values. That means, stack implemented using linked list works for the variable size of data. So, there is no need to fix the size at the beginning of the implementation. The Stack implemented using linked list can organize as many data values as we want.

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How to implement stack using linked list?
Define Stack?
Why and when should I use Stack or Queue data structures instead of Arrays/Lists?
Why Are Stacks Useful?
How to implement Linked List Using Stack?
Compare Array based vs Linked List stack implementations?
What is the Advantage of stack using LinkedList over stack using Array

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Disclaimer: The information given in this video is as per my research and knowledge. Kindly do your research also before taking any step to go further.

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