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How many numbers will the stack contain after the following operations on a stack of size 7?Push(8);Push(0);Pop();Push(2);Push(3);Pop();Push(4);Pop();Pop();Pop();Push(5);a) 1b) 2c) 3d) 4

Question

How many numbers will the stack contain after the following operations on a stack of size 7?Push(8);Push(0);Pop();Push(2);Push(3);Pop();Push(4);Pop();Pop();Pop();Push(5);a) 1b) 2c) 3d) 4

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Solution

Let's go through the operations one by one:

  1. Push(8): The stack now contains one number.
  2. Push(0): The stack now contains two numbers.
  3. Pop(): Removes the top number from the stack, leaving one number.
  4. Push(2): The stack now contains two numbers.
  5. Push(3): The stack now contains three numbers.
  6. Pop(): Removes the top number from the stack, leaving two numbers.
  7. Push(4): The stack now contains three numbers.
  8. Pop(): Removes the top number from the stack, leaving two numbers.
  9. Pop(): Removes the top number from the stack, leaving one number.
  10. Pop(): Removes the top number from the stack, leaving zero numbers.
  11. Push(5): The stack now contains one number.

So, the answer is a) 1.

This problem has been solved

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