a good stack(deque&list) and a good queue (deque) in Python | datafireball
Yaroslav Isaienkov🌸 (@yisaienkov) / Twitter
Solved very confused about how to solve this code, please | Chegg.com
Allen Downey on Twitter: "If you search for "python breadth first search", a substantial majority of the implementations you find are accidentally quadratic. Should be O(n+m), instead they are O(n^2). Here's the
Python: Create a deque and append few elements to the left and right, then remove some elements from the left, right sides and reverse the deque - w3resource