SAMPLE INPUT OUTPUT: 1.CREATE 2.PUSH 3.POP 4.EXIT
ENTER YOUR CHOICE: 1 ENTER THE FIRST ELEMENT : 10 10
1.CREATE 2.PUSH 3.POP 4.EXIT
ENTER YOUR CHOICE: 2 ENTER THE FIRST ELEMENT : 20 20 10
ENTER YOUR CHOICE: 2 ENTER THE FIRST ELEMENT : 30 30 20 10
ENTER YOUR CHOICE: 3 DELETED ELEMENT IS 30 20 10
ENTER YOUR CHOICE: 4