io.purush.java.immutable.collections

Interface Deque<E>

public interface Deque<E>

A doubly-ended queue. Abstracts LinkedLists.

Since:

1.0

Author:

Purush Swaminathan

Method Summary

Modifier and Type	Method and Description
E	peekEnd() Show the end of this Deque.
E	peekHead() Show the head of this Deque.
Deque<E>	popEnd() Create a new Deque without the end of the exisiting Deque.
Deque<E>	popHead() Create a new Deque without the head of the existing Deque.
Deque<E>	pushEnd(E e) Create a new Deque with `e` as the end element.
Deque<E>	pushHead(E e) Create a new Deque with `e` as head element.

Method Detail

pushHead

Deque<E> pushHead(E e)

Create a new Deque with `e` as head element.

Parameters:

e - element to be pushed to the head of the queue.

Returns:

new queue that has the pushed element

pushEnd

Deque<E> pushEnd(E e)

Create a new Deque with `e` as the end element.

Parameters:

e - element to be pushed to the end of the queue.

Returns:

new queue that has the pushed element

popEnd

Deque<E> popEnd()

Create a new Deque without the end of the exisiting Deque.

Returns:

deque

popHead

Deque<E> popHead()

Create a new Deque without the head of the existing Deque.

peekHead

E peekHead()

Show the head of this Deque.

peekEnd

E peekEnd()

Show the end of this Deque.