queue

-- import "github.com/vedhavyas/queue"

Usage

type Queue

type Queue struct {}

Queue represents the FIFO list of items

func (*Queue) Dequeue

func (q *Queue) Dequeue() (interface{}, error)

Dequeue returns the first item from queue: O(1)

Returns an error if queue empty/out of bounds

func (*Queue) Enqueue

func (q *Queue) Enqueue(item interface{})

Enqueue add the item to the queue: O(1)

func (*Queue) Get

func (q *Queue) Get(i int) (interface{}, error)

Get returns the item at the given index from the list: O(n)

Returns an error if queue empty/out of bounds

func (*Queue) Len

func (q *Queue) Len() int

Len returns the items count in the queue

func (*Queue) Peak

func (q *Queue) Peak() (interface{}, error)

Peak returns the next value in queue but does not remove from queue: O(1)

Returns error if queue empty

func (*Queue) PeakAt

func (q *Queue) PeakAt(i int) (interface{}, error)

PeakAt returns the item at the index i from the queue: O(n)

Returns error if queue empty/out of bounds

func (*Queue) String

func (q *Queue) String() string

String dumps the queue in human readable format: O(n)