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Which of the following is true about linked list implementation of stack?
- a)In push operation, if new nodes are inserted at the beginning of linked list, then in pop operation, nodes must be removed from end.
- b)In push operation, if new nodes are inserted at the end, then in pop operation, nodes must be removed from the beginning.
- c)Both of the above
- d)None of the above
Correct answer is option 'D'. Can you explain this answer?
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Which of the following is true about linked list implementation of sta...
Linked List Implementation of Stack
- Stack is a data structure in which elements are inserted and removed from the same end, called the top of the stack.
- Linked list is a dynamic data structure in which each element is a separate object, called a node, that contains a value and a reference to the next node.
- Linked list implementation of stack involves creating a linked list where the top of the stack is represented by the head node of the linked list.
Push Operation
- In push operation, a new node is inserted at the beginning of the linked list.
- This is because the top of the stack is always the first node of the linked list.
- The steps involved in push operation are:
1. Create a new node with the given value.
2. Set the next pointer of the new node to the current head of the linked list.
3. Set the head of the linked list to the new node.
Pop Operation
- In pop operation, the top node of the linked list is removed.
- This is because the top of the stack is always the first node of the linked list.
- The steps involved in pop operation are:
1. Check if the linked list is empty. If it is, return an error.
2. Store the value of the head node in a variable.
3. Set the head of the linked list to the next node.
4. Delete the previous head node.
5. Return the stored value.
Answer
- Neither option (a) nor option (b) is true for linked list implementation of stack.
- In linked list implementation of stack, new nodes are inserted at the beginning of the linked list in push operation and the top node of the linked list is removed in pop operation.
- Stack is a data structure in which elements are inserted and removed from the same end, called the top of the stack.
- Linked list is a dynamic data structure in which each element is a separate object, called a node, that contains a value and a reference to the next node.
- Linked list implementation of stack involves creating a linked list where the top of the stack is represented by the head node of the linked list.
Push Operation
- In push operation, a new node is inserted at the beginning of the linked list.
- This is because the top of the stack is always the first node of the linked list.
- The steps involved in push operation are:
1. Create a new node with the given value.
2. Set the next pointer of the new node to the current head of the linked list.
3. Set the head of the linked list to the new node.
Pop Operation
- In pop operation, the top node of the linked list is removed.
- This is because the top of the stack is always the first node of the linked list.
- The steps involved in pop operation are:
1. Check if the linked list is empty. If it is, return an error.
2. Store the value of the head node in a variable.
3. Set the head of the linked list to the next node.
4. Delete the previous head node.
5. Return the stored value.
Answer
- Neither option (a) nor option (b) is true for linked list implementation of stack.
- In linked list implementation of stack, new nodes are inserted at the beginning of the linked list in push operation and the top node of the linked list is removed in pop operation.
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Community Answer
Which of the following is true about linked list implementation of sta...
To keep the Last In First Out order, a stack can be implemented using linked list in two ways:
a) In push operation, if new nodes are inserted at the beginning of linked list, then in pop operation, nodes must be removed from beginning.
b) In push operation, if new nodes are inserted at the end of linked list, then in pop operation, nodes must be removed from end.
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Which of the following is true about linked list implementation of stack?a)In push operation, if new nodes are inserted at the beginning of linked list, then in pop operation, nodes must be removed from end.b)In push operation, if new nodes are inserted at the end, then in pop operation, nodes must be removed from the beginning.c)Both of the aboved)None of the aboveCorrect answer is option 'D'. Can you explain this answer?
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