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Arraydeque.java

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+///Implementaion of Deque using ArrayDeque
+//--->ArrayDeque does not support concurrent access by multiple threads.
+//-->ArrayDeque class is likely to be faster than Stack when used as a stack.
+//-->ArrayDeque class is likely to be faster than LinkedList when used as a queue.
+import java.util.*;
+
+public class Arraydeque
+{
+    static Scanner sc = new Scanner(System.in);
+	public static void main(String[] args) {
+	     Deque<Integer> deque = new ArrayDeque<Integer>();
+
+		for (int i=0;i<6;i++){
+		    deque.add(sc.nextInt());
+		}
+		System.out.println(deque);
+		//add at end 
+		deque.add(23);
+		//add at first
+		deque.addFirst(25);
+		//add at last 
+		deque.addLast(46);
+		// get first 
+		System.out.println(deque.getFirst());
+		// get Last 
+		System.out.println(deque.getLast());
+		//push element at head;
+		deque.push(89);
+		System.out.println(deque);
+		//pop element from end
+		deque.pop();
+		System.out.println(deque);
+		//remove element first element 
+	    deque.removeFirst();
+	    System.out.println(deque);
+		// remove last element 
+		deque.removeLast();
+		System.out.println(deque);
+	}
+}