Stack Class
In this exercise, you are tasked with implementing a
Stack class. This class should be able to:- Push an item onto the stack (
push()method).
- Pop an item from the stack (
pop()method) - should remove and return the item.
- Check if the stack is empty (
is_empty()method) - should return a boolean.
Additionally, the underlying data structure that stores the stack items (i.e., a Python list) must be private to the
Stack class.Input | Output |
s = Stack(); s.push(1); s.push(2); s.push(3); print(s.pop()); print(s.is_empty()); print(s.pop()); print(s.pop()); print(s.is_empty()) | 3
False
2
1
True |
Constraints
Time limit: 2 seconds
Memory limit: 512 MB
Output limit: 1 MB