Define stacks. Explain various operation of stacks ? 

==> Stacks

• : A stack is linear Data Sturcture in which items are added (pushed, inserted) and removed(pop, deleted) from one end called top.
• A stack is a container of objects that are inserted and removed according to the last-in first-out (LIFO) principle.
• . In the stacks only two operations are allowed: push the item into the stack, and pop the item out of the stack.
• A stack is a limited access data structure - elements can be added and removed from the stack only at the top. Push adds an item to the top of the stack, pop removes the item from the top. A helpful analogy is to think of a stack of books; you can remove only the top book, also you can add a new book on the top.

==> Stack Operations--

       1. Stack full

       2. Stack empty

       3. Push

       4. Pop

       5. Display

       6. Top of stack

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KUMAR SHIVAM