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public class MyQueue<T> {
	private T queue[];
	private int fpnt, rpnt;
	private final static int DEFAULT_CAPACITY = 10;
	private int capacity;
	
	public MyQueue() {
		this(DEFAULT_CAPACITY);
	}
	
	public MyQueueR(int initialCapacity) {
		capacity = initialCapacity;
		queue = (T[]) new Object[initialCapacity];
		fpnt = 0;
		rpnt = 0;
	}

	private int nextp(int pnt) {
		return ((pnt + 1) % capacity);
	}

	public void enqueue(T item) {
		if(nextp(rpnt) == fpnt)
			System.out.println("Queue is full");
		else {
			rpnt = nextp(rpnt);
			queue[rpnt] = item;
		}
	}
	
	public T dequeue() {
		if(fpnt == rpnt) {
			System.out.println("Queue is empty");
			return null;
		} else {
			T tmp = queue[fpnt];
			fpnt = nextp(fpnt);
			return tmp;
		}
	}
}

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