c++ - What really is a deque in STL? - Stack Overflow
A deque, short for "double-ended queue," is a versatile data structure in the C++ Standard Template Library (STL). It allows for efficient insertion and deletion of elements at both the …
What's the difference between deque and list STL containers?
Oct 11, 2018 · A deque is very much like a vector: like vector, it is a sequence that supports random access to elements, constant time insertion and removal of elements at the end of the …
python - How to slice a deque? - Stack Overflow
Apr 4, 2012 · deque_slice = collections.deque(itertools.islice(my_deque, 10, 20)) Indexing into a deque requires following a linked list from the beginning each time, so the islice() approach, …
java - Why should I use Deque over Stack? - Stack Overflow
Deque<Integer> stack = new ArrayDeque<>(); I definitely do not want synchronized behavior here as I will be using this datastructure local to a method . Apart from this why should I prefer …
How to peek front of deque without popping? - Stack Overflow
Feb 6, 2018 · Deque too can be interpreted as a list in terms of accessing using indices. You can peek front element by using deque[0] and peek last using deque[-1] This works without …
python - queue.Queue vs. collections.deque - Stack Overflow
I need a queue which multiple threads can put stuff into, and multiple threads may read from. Python has at least two queue classes, queue.Queue and collections.deque, with the former …
How to implement deque data structure in javascript?
Feb 4, 2020 · How many pointers do I need? I know from implementing a queue I need two (head-tail) pointers, but not sure if I need more pointers for a deque Which data type in JavaScript is …
How is deque implemented in c++ stl - Stack Overflow
May 27, 2019 · I just wanted to know how deque is implemented and how are the basic operations like push_front and random access operator are provided in that implementation.
python - deque remove item by index - Stack Overflow
May 25, 2018 · Deque is a double linked list internally. So any action require index is O (n). So del deq [1] is O (n). However, pop and append is O (1). This is opposite to the normal list which is …
c# equivalent for c++ vector or deque - Stack Overflow
What should I use in C# to replace C++ vector and deque efficiently. That is I need a structure that supports direct indexing effieciently and also supports delete from one or both ends …