python deque pop
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in python, deque (double-ended queue) is a versatile data structure that provides the functionality of both stacks and queues. the pop() method in a deque is used to remove and return elements from either end of the deque. in this tutorial, we'll explore how to use pop() effectively with examples.
a deque is implemented in python's collections module. it allows fast insertion and deletion of elements from both ends, making it suitable for implementing queues, stacks, and other data structures where efficient insertion and deletion operations are required.
to use a deque, you need to import it from the collections module:
now, let's delve into the pop() method of deque.
the syntax for using the pop() method on a deque is:
this removes and returns the last element from the deque.
let's start with a simple example:
output:
in this example, the pop() method removed the last element (5) from the deque, and the deque is updated accordingly.
you can also use pop() to remove elements from the beginning of the deque. however, this operation is less efficient compared to removing elements from the end.
output:
in this example, pop(0) removes the first element (1) from the deque.
the pop() method in a deque is a powerful tool for removing elements efficiently from both ends of the deque. however, it's important to note that removing elements from the beginning of a deque using pop(0) may not be as efficient as removing elements from the end. use pop() wisely based on your specific use case to achieve optimal performance.
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