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Consider the following operations performed on a stack of size 5 : Push (a); Pop() ; Push(b); Push(c); Pop(); Push(d); Pop();Pop(); Push (e) Which of the following statements is correct?

Question

Consider the following operations performed on a stack of size 5 : Push (a); Pop() ; Push(b); Push(c); Pop(); Push(d); Pop();Pop(); Push (e) Which of the following statements is correct?

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Solution

The operations on the stack are performed as follows:

  1. Push(a): The element 'a' is added to the stack. The stack now contains: a
  2. Pop(): The last element added to the stack, 'a', is removed. The stack is now empty.
  3. Push(b): The element 'b' is added to the stack. The stack now contains: b
  4. Push(c): The element 'c' is added to the stack. The stack now contains: b, c
  5. Pop(): The last element added to the stack, 'c', is removed. The stack now contains: b
  6. Push(d): The element 'd' is added to the stack. The stack now contains: b, d
  7. Pop(): The last element added to the stack, 'd', is removed. The stack now contains: b
  8. Pop(): The last element added to the stack, 'b', is removed. The stack is now empty.
  9. Push(e): The element 'e' is added to the stack. The stack now contains: e

So, the correct statement would be "After all the operations are performed, the stack contains the element 'e'."

This problem has been solved

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