Class LinkedListQueue<E, R>

  1. First In, First Out (FIFO) Strategy: Like other queue implementations, LinkedListQueue follows the first in, first out principle, meaning the element that is added to the queue first will be the first to be removed.
  2. Based on Linked List: LinkedListQueue uses a linked list to store elements. Each node in the linked list contains data and a pointer to the next node.
  3. Memory Usage: Since each element requires additional space to store a pointer to the next element, linked lists may use more memory compared to arrays.
  4. Frequent Enqueuing and Dequeuing Operations: If your application involves frequent enqueuing and dequeuing operations and is less concerned with random access, then LinkedListQueue is a good choice.

Type Parameters

  • E = any
  • R = any

Hierarchy (view full)

Accessors

  • get first(): undefined | E
  • The above function returns the value of the first element in a linked list, or undefined if the list is empty.

    Returns undefined | E

    The value of the first node in the linked list, or undefined if the linked list is empty.

  • get last(): undefined | E
  • The function returns the value of the last element in a linked list, or undefined if the list is empty.

    Returns undefined | E

    The value of the last node in the linked list, or undefined if the linked list is empty.

  • get size(): number
  • The function returns the size of an object.

    Returns number

    The size of the object, which is a number.

  • get toElementFn(): undefined | ((rawElement: R) => E)
  • The function returns the _toElementFn property, which is a function that converts a raw element to a specific type.

    Returns undefined | ((rawElement: R) => E)

    The function get toElementFn() is returning either a function that takes a raw element rawElement of type R and returns an element E, or undefined if no function is assigned to _toElementFn.

Methods

  • The function _ensurePredicate in TypeScript ensures that the input is either a node, a predicate function, or a value to compare with the node's value.

    Parameters

    Returns ((node: SinglyLinkedListNode<E>) => boolean)

    A function is being returned. If the input elementNodeOrPredicate is already a node, a function is returned that checks if a given node is equal to the input node. If the input is a predicate function, it is returned as is. If the input is neither a node nor a predicate function, a function is returned that checks if a given node's value is equal to the input

  • The _isPredicate function in TypeScript checks if the input is a function that takes a SinglyLinkedListNode as an argument and returns a boolean.

    Parameters

    Returns elementNodeOrPredicate is ((node: SinglyLinkedListNode<E>) => boolean)

    The _isPredicate method is returning a boolean value based on whether the elementNodeOrPredicate parameter is a function or not. If the elementNodeOrPredicate is a function, the method will return true, indicating that it is a predicate function. If it is not a function, the method will return false.

  • Time Complexity: O(n) Space Complexity: O(1)

    The function is an implementation of the Symbol.iterator method that returns an IterableIterator.

    Parameters

    • Rest...args: any[]

      The args parameter in the code snippet represents a rest parameter. It allows the function to accept any number of arguments as an array. In this case, the args parameter is used to pass any number of arguments to the _getIterator method.

    Returns IterableIterator<E, any, any>

  • Time Complexity: O(n) Space Complexity: O(1)

    The addAfter function in TypeScript adds a new element or node after an existing element or node in a singly linked list.

    Parameters

    • existingElementOrNode: E | SinglyLinkedListNode<E>

      existingElementOrNode can be either an element of type E or a SinglyLinkedListNode of type E.

    • newElementOrNode: E | SinglyLinkedListNode<E>

      The newElementOrNode parameter in the addAfter method represents the element or node that you want to add after the existing element or node in a singly linked list. This parameter can be either the value of the new element or a reference to a SinglyLinkedListNode containing

    Returns boolean

    The addAfter method returns a boolean value - true if the new element or node was successfully added after the existing element or node, and false if the existing element or node was not found.

  • Time Complexity: O(n) Space Complexity: O(1)

    The addAt function inserts a new element or node at a specified index in a singly linked list.

    Parameters

    • index: number

      The index parameter represents the position at which you want to add a new element or node in the linked list. It is a number that indicates the index where the new element or node should be inserted.

    • newElementOrNode: E | SinglyLinkedListNode<E>

      The newElementOrNode parameter in the addAt method can be either a value of type E or a SinglyLinkedListNode<E> object. This parameter represents the element or node that you want to add to the linked list at the specified index.

    Returns boolean

    The addAt method returns a boolean value - true if the element or node was successfully added at the specified index, and false if the index is out of bounds.

  • Time Complexity: O(n) Space Complexity: O(1)

    The function addBefore in TypeScript adds a new element or node before an existing element or node in a singly linked list.

    Parameters

    • existingElementOrNode: E | SinglyLinkedListNode<E>

      existingElementOrNode represents the element or node in the linked list before which you want to add a new element or node.

    • newElementOrNode: E | SinglyLinkedListNode<E>

      The newElementOrNode parameter in the addBefore method represents the element or node that you want to insert before the existing element or node in the linked list. This new element can be of type E or a SinglyLinkedListNode<E>.

    Returns boolean

    The addBefore method returns a boolean value - true if the new element or node was successfully added before the existing element or node, and false if the operation was unsuccessful.

  • Time Complexity: O(n) Space Complexity: O(1)

    The function at returns the value at a specified index in a linked list, or undefined if the index is out of range.

    Parameters

    • index: number

      The index parameter is a number that represents the position of the element we want to retrieve from the list.

    Returns undefined | E

    The method at(index: number): E | undefined returns the value at the specified index in the linked list, or undefined if the index is out of bounds.

  • Time Complexity: O(n) Space Complexity: O(n) The clone function returns a new instance of the LinkedListQueue class with the same values as the current instance.

    Returns LinkedListQueue<E, R>

    The clone() method is returning a new instance of LinkedListQueue with the same values as the original LinkedListQueue.

  • Time Complexity: O(n) Space Complexity: O(1)

    The function countOccurrences iterates through a singly linked list and counts the occurrences of a specified element or nodes that satisfy a given predicate.

    Parameters

    Returns number

    The countOccurrences method returns the number of occurrences of the specified element, node, or predicate function in the singly linked list.

  • Time Complexity: O(n) Space Complexity: O(1)

    The delete function removes a node with a specific value from a singly linked list.

    Parameters

    • elementOrNode: undefined | E | SinglyLinkedListNode<E>

      The elementOrNode parameter can accept either a value of type E or a SinglyLinkedListNode<E> object.

    Returns boolean

    The delete method returns a boolean value. It returns true if the value or node is found and successfully deleted from the linked list, and false if the value or node is not found in the linked list.

  • Time Complexity: O(n) Space Complexity: O(1)

    The deleteAt function removes an element at a specified index from a linked list and returns the removed element.

    Parameters

    • index: number

      The index parameter represents the position of the element that needs to be deleted in the data structure. It is of type number.

    Returns boolean

    The method deleteAt returns the value of the node that was deleted, or undefined if the index is out of bounds.

  • Time Complexity: O(n) Space Complexity: O(1)

    The every function checks if every element in the array satisfies a given predicate.

    Parameters

    • predicate: ElementCallback<E, R, boolean, SinglyLinkedList<E, R>>

      The predicate parameter is a callback function that takes three arguments: the current element being processed, its index, and the array it belongs to. It should return a boolean value indicating whether the element satisfies a certain condition or not.

    • OptionalthisArg: any

      The thisArg parameter is an optional argument that specifies the value to be used as this when executing the predicate function. If thisArg is provided, it will be passed as the this value to the predicate function. If thisArg is

    Returns boolean

    The every method is returning a boolean value. It returns true if every element in the array satisfies the provided predicate function, and false otherwise.

  • Time Complexity: O(n) Space Complexity: O(n)

    The filter function creates a new SinglyLinkedList by iterating over the elements of the current list and applying a callback function to each element to determine if it should be included in the filtered list.

    Parameters

    • callback: ElementCallback<E, R, boolean, SinglyLinkedList<E, R>>

      The callback parameter is a function that will be called for each element in the list. It takes three arguments: the current element, the index of the current element, and the list itself. The callback function should return a boolean value indicating whether the current element should be included in the filtered list or not

    • OptionalthisArg: any

      The thisArg parameter is an optional argument that specifies the value to be used as this when executing the callback function. If thisArg is provided, it will be passed as the this value to the callback function. If thisArg is

    Returns SinglyLinkedList<E, R>

    The filter method is returning a new SinglyLinkedList object that contains the elements that pass the filter condition specified by the callback function.

  • Time Complexity: O(n) Space Complexity: O(1)

    The find function iterates over the elements of an array-like object and returns the first element that satisfies the provided callback function.

    Parameters

    • callbackfn: ElementCallback<E, R, boolean, SinglyLinkedList<E, R>>

      The callbackfn parameter is a function that will be called for each element in the array. It takes three arguments: the current element being processed, the index of the current element, and the array itself. The function should return a boolean value indicating whether the current element matches the desired condition.

    • OptionalthisArg: any

      The thisArg parameter is an optional argument that specifies the value to be used as this when executing the callbackfn function. If thisArg is provided, it will be passed as the this value to the callbackfn function. If thisArg @returns The findmethod returns the first element in the array that satisfies the provided callback function. If no element satisfies the callback function,undefined` is returned.

    Returns undefined | E

  • Time Complexity: O(n) Space Complexity: O(1)

    The forEach function iterates over each element in an array-like object and calls a callback function for each element.

    Parameters

    • callbackfn: ElementCallback<E, R, void, SinglyLinkedList<E, R>>

      The callbackfn parameter is a function that will be called for each element in the array. It takes three arguments: the current element being processed, the index of the current element, and the array that forEach was called upon.

    • OptionalthisArg: any

      The thisArg parameter is an optional argument that specifies the value to be used as this when executing the callbackfn function. If thisArg is provided, it will be passed as the this value to the callbackfn function. If `thisArg

    Returns void

  • Time Complexity: O(n) Space Complexity: O(1)

    This function searches for a specific element in a singly linked list based on a given node or predicate.

    Parameters

    Returns undefined | E

    The get method returns the value of the first node in the singly linked list that satisfies the provided predicate function. If no such node is found, it returns undefined.

  • Time Complexity: O(n) Space Complexity: O(1)

    The function getNode in TypeScript searches for a node in a singly linked list based on a given element, node, or predicate.

    Parameters

    • elementNodeOrPredicate:
          | undefined
          | E
          | SinglyLinkedListNode<E>
          | ((node: SinglyLinkedListNode<E>) => boolean)

      elementNodeOrPredicate - The elementNodeOrPredicate parameter in the getNode method can be one of the following types:

    Returns undefined | SinglyLinkedListNode<E>

    The getNode method returns either a SinglyLinkedListNode<E> if a matching node is found based on the provided predicate, or it returns undefined if no matching node is found or if the input parameter is undefined.

  • Time Complexity: O(n) Space Complexity: O(1)

    The function getNodeAt returns the node at a given index in a singly linked list.

    Parameters

    • index: number

      The index parameter is a number that represents the position of the node we want to retrieve from the linked list. It indicates the zero-based index of the node we want to access.

    Returns undefined | SinglyLinkedListNode<E>

    The method getNodeAt(index: number) returns a SinglyLinkedListNode<E> object if the node at the specified index exists, or undefined if the index is out of bounds.

  • Time Complexity: O(n) Space Complexity: O(1)

    The function checks if a given element exists in a collection.

    Parameters

    • element: E

      The parameter "element" is of type E, which means it can be any type. It represents the element that we want to check for existence in the collection.

    Returns boolean

    a boolean value. It returns true if the element is found in the collection, and false otherwise.

  • Time Complexity: O(n) Space Complexity: O(1)

    The indexOf function in TypeScript searches for a specific element or node in a singly linked list and returns its index if found.

    Parameters

    • elementNodeOrPredicate: E | SinglyLinkedListNode<E> | ((node: SinglyLinkedListNode<E>) => boolean)

      elementNodeOrPredicate - The elementNodeOrPredicate parameter in the indexOf method can be one of the following types:

    Returns number

    The indexOf method returns the index of the first occurrence of the element that matches the provided predicate in the singly linked list. If no matching element is found, it returns -1.

  • The function checks if the length of a data structure is equal to zero and returns a boolean value indicating whether it is empty or not.

    Returns boolean

    A boolean value indicating whether the length of the object is equal to 0.

  • Time Complexity: O(1) Space Complexity: O(1)

    The function isNode in TypeScript checks if the input is an instance of SinglyLinkedListNode.

    Parameters

    • elementNodeOrPredicate: E | SinglyLinkedListNode<E> | ((node: SinglyLinkedListNode<E>) => boolean)

      elementNodeOrPredicate - The elementNodeOrPredicate parameter in the isNode function can be one of the following types:

    Returns elementNodeOrPredicate is SinglyLinkedListNode<E>

    The isNode function is checking if the elementNodeOrPredicate parameter is an instance of SinglyLinkedListNode<E>. If it is, the function returns true, indicating that the parameter is a SinglyLinkedListNode<E>. If it is not an instance of SinglyLinkedListNode<E>, the function returns false.

  • Time Complexity: O(n) Space Complexity: O(n)

    The map function takes a callback function and returns a new SinglyLinkedList with the results of applying the callback to each element in the original list.

    Type Parameters

    • EM
    • RM

    Parameters

    • callback: ElementCallback<E, R, EM, SinglyLinkedList<E, R>>

      The callback parameter is a function that will be called for each element in the original list. It takes three arguments: current (the current element being processed), index (the index of the current element), and this (the original list). It should return a value

    • OptionaltoElementFn: ((rawElement: RM) => EM)

      The toElementFn parameter is an optional function that can be used to convert the raw element (RR) to the desired element type (T). It takes the raw element as input and returns the converted element. If this parameter is not provided, the raw element will be used as is.

        • (rawElement): EM
        • Parameters

          • rawElement: RM

          Returns EM

    • OptionalthisArg: any

      The thisArg parameter is an optional argument that allows you to specify the value of this within the callback function. It is used to set the context or scope in which the callback function will be executed. If thisArg is provided, it will be used as the value of

    Returns SinglyLinkedList<EM, RM>

    a new instance of the SinglyLinkedList class with the mapped elements.

  • Time Complexity: O(n) Space Complexity: O(1)

    The pop function removes and returns the value of the last element in a linked list.

    Returns undefined | E

    The method is returning the value of the element that is being popped from the end of the list.

  • Time Complexity: O(1) Space Complexity: O(1)

    The push function adds a new element or node to the end of a singly linked list.

    Parameters

    • elementOrNode: E | SinglyLinkedListNode<E>

      The elementOrNode parameter in the push method can accept either an element of type E or a SinglyLinkedListNode<E> object.

    Returns boolean

    The push method is returning a boolean value, specifically true.

  • Time Complexity: O(n) Space Complexity: O(1)

    The reduce function iterates over the elements of an array-like object and applies a callback function to reduce them into a single value.

    Type Parameters

    • U

    Parameters

    • callbackfn: ReduceElementCallback<E, R, U, SinglyLinkedList<E, R>>

      The callbackfn parameter is a function that will be called for each element in the array. It takes four arguments:

    • initialValue: U

      The initialValue parameter is the initial value of the accumulator. It is the value that the accumulator starts with before the reduction operation begins.

    Returns U

    The reduce method is returning the final value of the accumulator after iterating over all the elements in the array and applying the callback function to each element.

  • Time Complexity: O(n) Space Complexity: O(1)

    The reverse function reverses the order of the nodes in a singly linked list.

    Returns this

    The reverse() method does not return anything. It has a return type of void.

  • Time Complexity: O(n) Space Complexity: O(1)

    The "some" function checks if at least one element in a collection satisfies a given predicate.

    Parameters

    • predicate: ElementCallback<E, R, boolean, SinglyLinkedList<E, R>>

      The predicate parameter is a callback function that takes three arguments: value, index, and array. It should return a boolean value indicating whether the current element satisfies the condition.

    • OptionalthisArg: any

      The thisArg parameter is an optional argument that specifies the value to be used as the this value when executing the predicate function. If thisArg is provided, it will be passed as the this value to the predicate function. If `thisArg

    Returns boolean

    a boolean value. It returns true if the predicate function returns true for any element in the collection, and false otherwise.

  • Time Complexity: O(1) Space Complexity: O(1)

    The unshift function adds a new element or node to the beginning of a singly linked list in TypeScript.

    Parameters

    • elementOrNode: E | SinglyLinkedListNode<E>

      The elementOrNode parameter in the unshift method can be either an element of type E or a SinglyLinkedListNode containing an element of type E.

    Returns boolean

    The unshift method is returning a boolean value, specifically true.