A deque (short for double-ended queue) is a linear data structure that allows adding and removing elements from both ends. It supports fast and memory-efficient operations such as append, pop ...

# Implement the following operations of a stack using queues. # push(x) -- Push element x onto stack. # pop() -- Removes the element on top of the stack. # top() -- Get the top element. # empty() -- ...

While it might be tempting to focus on optimizing the programming ... use Python lists for stacks, not realizing the potential performance pitfalls. Instead, consider using deque from the collections ...