DS – Stack Operations

Operations on Stack

push():

• A function which is used to insert an element on to the Stack
• While pushing an element, we need to check whether the Stack is Full or not.
• If Stack is full then display “Stack is Full” else insert element on Top.

pop():

• A function which is used to delete element from Stack.
• Pop() function always remove Top element of Stack.
• While removing element, we need to check Stack is Empty or not.
• If Stack is Empty -> display “Stack is Empty” message.
• If Stack is Not Empty -> it removes the Top location element.

display() or traverse():

• A function which is used to display all elements in the Stack
• If stack is Empty, we return with Error message.
• If Stack is not Empty, we display all elements from top to 0 indices

peek():

• A function that returns the top element of Stack.
• peek() function will not remove the element like pop() function
• peek() function  return error message if stack is empty.