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
Solution
Let's go through the operations one by one:
- Push(8): The stack now contains one number.
- Push(0): The stack now contains two numbers.
- Pop(): Removes the top number from the stack, leaving one number.
- Push(2): The stack now contains two numbers.
- Push(3): The stack now contains three numbers.
- Pop(): Removes the top number from the stack, leaving two numbers.
- Push(4): The stack now contains three numbers.
- Pop(): Removes the top number from the stack, leaving two numbers.
- Pop(): Removes the top number from the stack, leaving one number.
- Pop(): Removes the top number from the stack, leaving zero numbers.
- Push(5): The stack now contains one number.
So, the answer is a) 1.
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