Question

in C++ all I had to do was

#include <queue> -> including
queue<int> a; -> defining
a.push(1); ->using

but in java I found very difficult to use simple deque
what should I do…?
more specifically,
How should I code to simply do the same steps
as I did in C++; including, defining, using.

even more specifically,
I want to make a deque so that I can
add any integer in the deque at front or back.
and print whole numbers in that deque by the size of the deque

Answer 1

Java has both Queue and Deque types, and a LinkedList, among others, can act as either one:

import java.util.*;
Deque<Integer> q = new LinkedList<Integer>();
q.push(1);