es-next-tools
Version:
A comprehensive utility library for JavaScript and TypeScript that provides a wide range of functions for common programming tasks, including mathematical operations, date manipulations, array and object handling, string utilities, and more.
48 lines (47 loc) • 1.54 kB
TypeScript
/**
* Represents a double-ended queue (deque) data structure.
* @template T The type of elements in the deque.
*/
export declare class Deque<T> {
private items;
/**
* Adds an item to the front of the deque.
* @param {T} item - The item to add to the front.
*/
addFront(item: T): void;
/**
* Adds an item to the back of the deque.
* @param {T} item - The item to add to the back.
*/
addBack(item: T): void;
/**
* Removes and returns the item from the front of the deque.
* @returns {T | undefined} The item removed from the front, or undefined if empty.
*/
removeFront(): T | undefined;
/**
* Removes and returns the item from the back of the deque.
* @returns {T | undefined} The item removed from the back, or undefined if empty.
*/
removeBack(): T | undefined;
/**
* Returns the item at the front of the deque without removing it.
* @returns {T | undefined} The item at the front, or undefined if empty.
*/
peekFront(): T | undefined;
/**
* Returns the item at the back of the deque without removing it.
* @returns {T | undefined} The item at the back, or undefined if empty.
*/
peekBack(): T | undefined;
/**
* Checks if the deque is empty.
* @returns {boolean} True if the deque is empty, false otherwise.
*/
isEmpty(): boolean;
/**
* Returns the number of items in the deque.
* @returns {number} The size of the deque.
*/
size(): number;
}