Stack Vs Heap Data Structure
What is Stack?
A stack is a linear data structure where the last element entered exits first.
The order of stack data structure might be LIFO, FILO:
According to this technique, the piece that is in last will come out first. As an example, consider a stack of dishes stacked on top of each other. The plate we put last is on top, and because we take the plate at the top, we may claim that the plate we put last comes out first.
Basic Operations on Stack:
- push(): To insert an element into the stack
- isEmpty(): Returns true if the stack is empty else false.
- top(): Returns the top element of the stack
- pop(): To remove an element from the stack
- size(): Returns the size of the stack
What is Heap Data Structure?
A Heap is a kind of Tree-based Data Structure in which the tree is an entire binary tree. A heap is a data structure or memory that is used to hold global variables. All global variables are kept in heap memory by default. It enables the allocation of dynamic memory. The Processor does not handle heap memory. The heap data structure may be built either using arrays or trees.
It is an entire binary tree that meets the heap property criterion, whereas a completed binary tree is one in which all levels are entirely filled with the exception of the last one. At the last level, all the vertices would be far as left as possible
Basic Operations on Heap Data Structure:
- Heapify: It is a process of creating a heap from an array.
- Peek: To examine or locate the heap’s most recent element (max or min element for max and min heap).
- Insertion: Process to insert an element in existing heap time complexity O(log N).
- Time Complexity: O(log N)
- Deletion: Removing the heap’s top element or the one with the greatest priority, then arranging the heap.
- Time Complexity: O(log N)
Difference between Stack and Heap?
| S.N |
Stack |
Heap |
|---|---|---|
| 1. | The stack allocates static memory, which is used to hold temporary variables. | Heap allows for dynamic memory allocation. All global variables are kept in the heap by default. |
| 2. | The capacity of the stack memory is restricted and is determined by the operating system. | The amount of RAM available is not restricted. |
| 3. | It is a linear data structure, which implies that elements are kept in a linear order, one after the other. | Because it is a hierarchical data structure, the components are stored in the form of a tree. |
| 4. | Allocation and deallocation are controlled automatically in the stack. | In heap, the memory is manually managed. |
| 5. | It is of fixed size. | It is adaptable in usage since the size of the heap may be adjusted to meet our demands. |
| 6. | Stacks may be implemented in three ways: array, linked list, and dynamic memory. | The implementation of heap can be done in two forms using arrays and trees |
What is Stack?
A stack is a linear data structure where the last element entered exits first.
The order of stack data structure might be LIFO, FILO:
According to this technique, the piece that is in last will come out first. As an example, consider a stack of dishes stacked on top of each other. The plate we put last is on top, and because we take the plate at the top, we may claim that the plate we put last comes out first.
Basic Operations on Stack:
- push(): To insert an element into the stack
- isEmpty(): Returns true if the stack is empty else false.
- top(): Returns the top element of the stack
- pop(): To remove an element from the stack
- size(): Returns the size of the stack
What is Heap Data Structure?
A Heap is a kind of Tree-based Data Structure in which the tree is an entire binary tree. A heap is a data structure or memory that is used to hold global variables. All global variables are kept in heap memory by default. It enables the allocation of dynamic memory. The Processor does not handle heap memory. The heap data structure may be built either using arrays or trees.
It is an entire binary tree that meets the heap property criterion, whereas a completed binary tree is one in which all levels are entirely filled with the exception of the last one. At the last level, all the vertices would be far as left as possible
Basic Operations on Heap Data Structure:
- Heapify: It is a process of creating a heap from an array.
- Peek: To examine or locate the heap’s most recent element (max or min element for max and min heap).
- Insertion: Process to insert an element in existing heap time complexity O(log N).
- Time Complexity: O(log N)
- Deletion: Removing the heap’s top element or the one with the greatest priority, then arranging the heap.
- Time Complexity: O(log N)
Difference between Stack and Heap?
| S.N |
Stack |
Heap |
|---|---|---|
| 1. | The stack allocates static memory, which is used to hold temporary variables. | Heap allows for dynamic memory allocation. All global variables are kept in the heap by default. |
| 2. | The capacity of the stack memory is restricted and is determined by the operating system. | The amount of RAM available is not restricted. |
| 3. | It is a linear data structure, which implies that elements are kept in a linear order, one after the other. | Because it is a hierarchical data structure, the components are stored in the form of a tree. |
| 4. | Allocation and deallocation are controlled automatically in the stack. | In heap, the memory is manually managed. |
| 5. | It is of fixed size. | It is adaptable in usage since the size of the heap may be adjusted to meet our demands. |
| 6. | Stacks may be implemented in three ways: array, linked list, and dynamic memory. | The implementation of heap can be done in two forms using arrays and trees |
Denial of responsibility! Techno Blender is an automatic aggregator of the all world’s media. In each content, the hyperlink to the primary source is specified. All trademarks belong to their rightful owners, all materials to their authors. If you are the owner of the content and do not want us to publish your materials, please contact us by email – [email protected]. The content will be deleted within 24 hours.