red-black-tree-typed - npm Package Compare versions

Comparing version 1.50.4 to 1.50.5

dist/data-structures/base/iterable-base.d.ts

@@ -7,2 +7,3 @@ import { ElementCallback, EntryCallback, ReduceElementCallback, ReduceEntryCallback } from '../../types';
      */
+    abstract get size(): number;
     /**
@@ -98,2 +99,6 @@ * Time Complexity: O(n)
      * Space Complexity: O(1)
+     */
+    /**
+     * Time Complexity: O(n)
+     * Space Complexity: O(1)
      *
@@ -179,6 +184,2 @@ * The `forEach` function iterates over each key-value pair in a collection and executes a callback
      * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
      *
@@ -211,2 +212,3 @@ * The `reduce` function iterates over key-value pairs and applies a callback function to each pair,
 export declare abstract class IterableElementBase<E = any, C = any> {
+    abstract get size(): number;
     /**
@@ -263,2 +265,6 @@ * Time Complexity: O(n)
      * Space Complexity: O(1)
+     */
+    /**
+     * Time Complexity: O(n)
+     * Space Complexity: O(1)
      *
@@ -318,6 +324,2 @@ * The "some" function checks if at least one element in a collection satisfies a given predicate.
      * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
      *
@@ -324,0 +326,0 @@ * The function checks if a given element exists in a collection.

dist/data-structures/base/iterable-base.js

@@ -8,6 +8,2 @@ "use strict";
      * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
      *
@@ -130,2 +126,6 @@ * The function is an implementation of the Symbol.iterator method that returns an iterable iterator.
      * Space Complexity: O(1)
+     */
+    /**
+     * Time Complexity: O(n)
+     * Space Complexity: O(1)
      *
@@ -245,6 +245,2 @@ * The `forEach` function iterates over each key-value pair in a collection and executes a callback
      * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
      *
@@ -347,2 +343,6 @@ * The `reduce` function iterates over key-value pairs and applies a callback function to each pair,
      * Space Complexity: O(1)
+     */
+    /**
+     * Time Complexity: O(n)
+     * Space Complexity: O(1)
      *
@@ -422,6 +422,2 @@ * The "some" function checks if at least one element in a collection satisfies a given predicate.
      * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
      *
@@ -428,0 +424,0 @@ * The function checks if a given element exists in a collection.

dist/data-structures/graph/abstract-graph.d.ts

@@ -44,2 +44,3 @@ /**
     set vertexMap(v: Map<VertexKey, VO>);
+    get size(): number;
     /**
@@ -46,0 +47,0 @@ * In TypeScript, a subclass inherits the interface implementation of its parent class, without needing to implement the same interface again in the subclass. This behavior differs from Java's approach. In Java, if a parent class implements an interface, the subclass needs to explicitly implement the same interface, even if the parent class has already implemented it.

dist/data-structures/graph/abstract-graph.js

@@ -53,2 +53,5 @@ "use strict";
     }
+    get size() {
+        return this._vertexMap.size;
+    }
     /**
@@ -55,0 +58,0 @@ * Time Complexity: O(1) - Constant time for Map lookup.

dist/data-structures/linked-list/doubly-linked-list.d.ts

@@ -134,9 +134,8 @@ /**
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The push function adds a new node with the given value to the end of the doubly linked list.
-     * @param {E} value - The value to be added to the linked list.
+     * The push function adds a new element to the end of a doubly linked list.
+     * @param {E} element - The "element" parameter represents the value that you want to add to the
+     * doubly linked list.
+     * @returns The `push` method is returning a boolean value, `true`.
      */
-    push(value: E): boolean;
+    push(element: E): boolean;
     /**
@@ -147,8 +146,4 @@ * Time Complexity: O(1)
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `pop()` function removes and returns the value of the last node in a doubly linked list.
-     * @returns The method is returning the value of the removed node (removedNode.value) if the list is not empty. If the
-     * list is empty, it returns undefined.
+     * The `pop()` function removes and returns the value of the last element in a linked list.
+     * @returns The method is returning the value of the removed node.
      */
@@ -161,8 +156,4 @@ pop(): E | undefined;
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `shift()` function removes and returns the value of the first node in a doubly linked list.
-     * @returns The method `shift()` returns the value of the node that is removed from the beginning of the doubly linked
-     * list.
+     * The `shift()` function removes and returns the value of the first element in a doubly linked list.
+     * @returns The value of the removed node.
      */
@@ -175,10 +166,8 @@ shift(): E | undefined;
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The unshift function adds a new node with the given value to the beginning of a doubly linked list.
-     * @param {E} value - The `value` parameter represents the value of the new node that will be added to the beginning of the
-     * doubly linked list.
+     * The unshift function adds a new element to the beginning of a doubly linked list.
+     * @param {E} element - The "element" parameter represents the value of the element that you want to
+     * add to the beginning of the doubly linked list.
+     * @returns The `unshift` method is returning a boolean value, `true`.
      */
-    unshift(value: E): boolean;
+    unshift(element: E): boolean;
     /**
@@ -457,53 +446,2 @@ * Time Complexity: O(n)
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The addLast function adds a new node with the given value to the end of the doubly linked list.
-     * @param {E} value - The value to be added to the linked list.
-     */
-    addLast(value: E): boolean;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `pollLast()` function removes and returns the value of the last node in a doubly linked list.
-     * @returns The method is returning the value of the removed node (removedNode.value) if the list is not empty. If the
-     * list is empty, it returns undefined.
-     */
-    pollLast(): E | undefined;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `pollFirst()` function removes and returns the value of the first node in a doubly linked list.
-     * @returns The method `shift()` returns the value of the node that is removed from the beginning of the doubly linked
-     * list.
-     */
-    pollFirst(): E | undefined;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The addFirst function adds a new node with the given value to the beginning of a doubly linked list.
-     * @param {E} value - The `value` parameter represents the value of the new node that will be added to the beginning of the
-     * doubly linked list.
-     */
-    addFirst(value: E): void;
-    /**
      * The function returns an iterator that iterates over the values of a linked list.
@@ -510,0 +448,0 @@ */

dist/data-structures/linked-list/doubly-linked-list.js

@@ -164,10 +164,9 @@ "use strict";
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The push function adds a new node with the given value to the end of the doubly linked list.
-     * @param {E} value - The value to be added to the linked list.
+     * The push function adds a new element to the end of a doubly linked list.
+     * @param {E} element - The "element" parameter represents the value that you want to add to the
+     * doubly linked list.
+     * @returns The `push` method is returning a boolean value, `true`.
      */
-    push(value) {
-        const newNode = new DoublyLinkedListNode(value);
+    push(element) {
+        const newNode = new DoublyLinkedListNode(element);
         if (!this.head) {
@@ -190,8 +189,4 @@ this._head = newNode;
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `pop()` function removes and returns the value of the last node in a doubly linked list.
-     * @returns The method is returning the value of the removed node (removedNode.value) if the list is not empty. If the
-     * list is empty, it returns undefined.
+     * The `pop()` function removes and returns the value of the last element in a linked list.
+     * @returns The method is returning the value of the removed node.
      */
@@ -218,8 +213,4 @@ pop() {
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `shift()` function removes and returns the value of the first node in a doubly linked list.
-     * @returns The method `shift()` returns the value of the node that is removed from the beginning of the doubly linked
-     * list.
+     * The `shift()` function removes and returns the value of the first element in a doubly linked list.
+     * @returns The value of the removed node.
      */
@@ -246,11 +237,9 @@ shift() {
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The unshift function adds a new node with the given value to the beginning of a doubly linked list.
-     * @param {E} value - The `value` parameter represents the value of the new node that will be added to the beginning of the
-     * doubly linked list.
+     * The unshift function adds a new element to the beginning of a doubly linked list.
+     * @param {E} element - The "element" parameter represents the value of the element that you want to
+     * add to the beginning of the doubly linked list.
+     * @returns The `unshift` method is returning a boolean value, `true`.
      */
-    unshift(value) {
-        const newNode = new DoublyLinkedListNode(value);
+    unshift(element) {
+        const newNode = new DoublyLinkedListNode(element);
         if (!this.head) {
@@ -746,61 +735,2 @@ this._head = newNode;
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The addLast function adds a new node with the given value to the end of the doubly linked list.
-     * @param {E} value - The value to be added to the linked list.
-     */
-    addLast(value) {
-        return this.push(value);
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `pollLast()` function removes and returns the value of the last node in a doubly linked list.
-     * @returns The method is returning the value of the removed node (removedNode.value) if the list is not empty. If the
-     * list is empty, it returns undefined.
-     */
-    pollLast() {
-        return this.pop();
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `pollFirst()` function removes and returns the value of the first node in a doubly linked list.
-     * @returns The method `shift()` returns the value of the node that is removed from the beginning of the doubly linked
-     * list.
-     */
-    pollFirst() {
-        return this.shift();
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The addFirst function adds a new node with the given value to the beginning of a doubly linked list.
-     * @param {E} value - The `value` parameter represents the value of the new node that will be added to the beginning of the
-     * doubly linked list.
-     */
-    addFirst(value) {
-        this.unshift(value);
-    }
-    /**
      * The function returns an iterator that iterates over the values of a linked list.
@@ -807,0 +737,0 @@ */

dist/data-structures/linked-list/singly-linked-list.d.ts

@@ -63,2 +63,14 @@ /**
     get tail(): SinglyLinkedListNode<E> | undefined;
+    /**
+     * The above function returns the value of the first element in a linked list, or undefined if the
+     * list is empty.
+     * @returns The value of the first node in the linked list, or undefined if the linked list is empty.
+     */
+    get first(): E | undefined;
+    /**
+     * The function returns the value of the last element in a linked list, or undefined if the list is
+     * empty.
+     * @returns The value of the last node in the linked list, or undefined if the linked list is empty.
+     */
+    get last(): E | undefined;
     protected _size: number;
@@ -89,4 +101,2 @@ /**
      * Space Complexity: O(1)
-     * Constant time, as it involves basic pointer adjustments.
-     * Constant space, as it only creates a new node.
      */
@@ -97,21 +107,9 @@ /**
      *
-     * The `push` function adds a new node with the given value to the end of a singly linked list.
-     * @param {E} value - The "value" parameter represents the value that you want to add to the linked list. It can be of
-     * any type (E) as specified in the generic type declaration of the class or function.
+     * The push function adds a new element to the end of a singly linked list.
+     * @param {E} element - The "element" parameter represents the value of the element that you want to
+     * add to the linked list.
+     * @returns The `push` method is returning a boolean value, `true`.
      */
-    push(value: E): boolean;
+    push(element: E): boolean;
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `push` function adds a new node with the given value to the end of a singly linked list.
-     * @param {E} value - The "value" parameter represents the value that you want to add to the linked list. It can be of
-     * any type (E) as specified in the generic type declaration of the class or function.
-     */
-    addLast(value: E): boolean;
-    /**
      * Time Complexity: O(n)
@@ -125,23 +123,8 @@ * Space Complexity: O(1)
      *
-     * The `pop()` function removes and returns the value of the last element in a linked list, updating the head and tail
-     * pointers accordingly.
-     * @returns The method `pop()` returns the value of the node that is being removed from the end of the linked list. If
-     * the linked list is empty, it returns `undefined`.
+     * The `pop` function removes and returns the value of the last element in a linked list.
+     * @returns The method is returning the value of the element that is being popped from the end of the
+     * list.
      */
     pop(): E | undefined;
     /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
-     *
-     * The `pollLast()` function removes and returns the value of the last element in a linked list, updating the head and tail
-     * pointers accordingly.
-     * @returns The method `pop()` returns the value of the node that is being removed from the end of the linked list. If
-     * the linked list is empty, it returns `undefined`.
-     */
-    pollLast(): E | undefined;
-    /**
      * Time Complexity: O(1)
@@ -154,4 +137,4 @@ * Space Complexity: O(1)
      *
-     * The `shift()` function removes and returns the value of the first node in a linked list.
-     * @returns The value of the node that is being removed from the beginning of the linked list.
+     * The `shift()` function removes and returns the value of the first element in a linked list.
+     * @returns The value of the removed node.
      */
@@ -167,36 +150,11 @@ shift(): E | undefined;
      *
-     * The `pollFirst()` function removes and returns the value of the first node in a linked list.
-     * @returns The value of the node that is being removed from the beginning of the linked list.
+     * The unshift function adds a new element to the beginning of a singly linked list.
+     * @param {E} element - The "element" parameter represents the value of the element that you want to
+     * add to the beginning of the singly linked list.
+     * @returns The `unshift` method is returning a boolean value, `true`.
      */
-    pollFirst(): E | undefined;
+    unshift(element: E): boolean;
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The unshift function adds a new node with the given value to the beginning of a singly linked list.
-     * @param {E} value - The parameter "value" represents the value of the new node that will be added to the beginning of the
-     * linked list.
-     */
-    unshift(value: E): boolean;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The addFirst function adds a new node with the given value to the beginning of a singly linked list.
-     * @param {E} value - The parameter "value" represents the value of the new node that will be added to the beginning of the
-     * linked list.
-     */
-    addFirst(value: E): boolean;
-    /**
      * Time Complexity: O(n)
      * Space Complexity: O(1)
-     * Linear time, where n is the index, as it may need to traverse the list to find the desired node.
      */
@@ -203,0 +161,0 @@ /**

dist/data-structures/linked-list/singly-linked-list.js

@@ -78,2 +78,20 @@ "use strict";
     /**
+     * The above function returns the value of the first element in a linked list, or undefined if the
+     * list is empty.
+     * @returns The value of the first node in the linked list, or undefined if the linked list is empty.
+     */
+    get first() {
+        var _a;
+        return (_a = this.head) === null || _a === void 0 ? void 0 : _a.value;
+    }
+    /**
+     * The function returns the value of the last element in a linked list, or undefined if the list is
+     * empty.
+     * @returns The value of the last node in the linked list, or undefined if the linked list is empty.
+     */
+    get last() {
+        var _a;
+        return (_a = this.tail) === null || _a === void 0 ? void 0 : _a.value;
+    }
+    /**
      * The function returns the size of an object.
@@ -110,4 +128,2 @@ * @returns The size of the object, which is a number.
      * Space Complexity: O(1)
-     * Constant time, as it involves basic pointer adjustments.
-     * Constant space, as it only creates a new node.
      */
@@ -118,8 +134,9 @@ /**
      *
-     * The `push` function adds a new node with the given value to the end of a singly linked list.
-     * @param {E} value - The "value" parameter represents the value that you want to add to the linked list. It can be of
-     * any type (E) as specified in the generic type declaration of the class or function.
+     * The push function adds a new element to the end of a singly linked list.
+     * @param {E} element - The "element" parameter represents the value of the element that you want to
+     * add to the linked list.
+     * @returns The `push` method is returning a boolean value, `true`.
      */
-    push(value) {
-        const newNode = new SinglyLinkedListNode(value);
+    push(element) {
+        const newNode = new SinglyLinkedListNode(element);
         if (!this.head) {
@@ -137,17 +154,2 @@ this._head = newNode;
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `push` function adds a new node with the given value to the end of a singly linked list.
-     * @param {E} value - The "value" parameter represents the value that you want to add to the linked list. It can be of
-     * any type (E) as specified in the generic type declaration of the class or function.
-     */
-    addLast(value) {
-        return this.push(value);
-    }
-    /**
      * Time Complexity: O(n)
@@ -161,6 +163,5 @@ * Space Complexity: O(1)
      *
-     * The `pop()` function removes and returns the value of the last element in a linked list, updating the head and tail
-     * pointers accordingly.
-     * @returns The method `pop()` returns the value of the node that is being removed from the end of the linked list. If
-     * the linked list is empty, it returns `undefined`.
+     * The `pop` function removes and returns the value of the last element in a linked list.
+     * @returns The method is returning the value of the element that is being popped from the end of the
+     * list.
      */
@@ -188,18 +189,2 @@ pop() {
     /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(n)
-     * Space Complexity: O(1)
-     *
-     * The `pollLast()` function removes and returns the value of the last element in a linked list, updating the head and tail
-     * pointers accordingly.
-     * @returns The method `pop()` returns the value of the node that is being removed from the end of the linked list. If
-     * the linked list is empty, it returns `undefined`.
-     */
-    pollLast() {
-        return this.pop();
-    }
-    /**
      * Time Complexity: O(1)
@@ -212,4 +197,4 @@ * Space Complexity: O(1)
      *
-     * The `shift()` function removes and returns the value of the first node in a linked list.
-     * @returns The value of the node that is being removed from the beginning of the linked list.
+     * The `shift()` function removes and returns the value of the first element in a linked list.
+     * @returns The value of the removed node.
      */
@@ -232,22 +217,9 @@ shift() {
      *
-     * The `pollFirst()` function removes and returns the value of the first node in a linked list.
-     * @returns The value of the node that is being removed from the beginning of the linked list.
+     * The unshift function adds a new element to the beginning of a singly linked list.
+     * @param {E} element - The "element" parameter represents the value of the element that you want to
+     * add to the beginning of the singly linked list.
+     * @returns The `unshift` method is returning a boolean value, `true`.
      */
-    pollFirst() {
-        return this.shift();
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The unshift function adds a new node with the given value to the beginning of a singly linked list.
-     * @param {E} value - The parameter "value" represents the value of the new node that will be added to the beginning of the
-     * linked list.
-     */
-    unshift(value) {
-        const newNode = new SinglyLinkedListNode(value);
+    unshift(element) {
+        const newNode = new SinglyLinkedListNode(element);
         if (!this.head) {
@@ -265,20 +237,4 @@ this._head = newNode;
     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The addFirst function adds a new node with the given value to the beginning of a singly linked list.
-     * @param {E} value - The parameter "value" represents the value of the new node that will be added to the beginning of the
-     * linked list.
-     */
-    addFirst(value) {
-        return this.unshift(value);
-    }
-    /**
      * Time Complexity: O(n)
      * Space Complexity: O(1)
-     * Linear time, where n is the index, as it may need to traverse the list to find the desired node.
      */
@@ -285,0 +241,0 @@ /**

dist/data-structures/queue/deque.d.ts

@@ -436,55 +436,2 @@ /**
     /**
-     * Time Complexity: Amortized O(1) - Similar to push, resizing leads to O(n).
-     * Space Complexity: O(n) - Due to potential resizing.
-     */
-    /**
-     * Time Complexity: Amortized O(1) - Similar to push, resizing leads to O(n).
-     * Space Complexity: O(n) - Due to potential resizing.
-     *
-     * The addLast function adds an element to the end of an array.
-     * @param {E} element - The element parameter represents the element that you want to add to the end of the
-     * data structure.
-     */
-    addLast(element: E): boolean;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The function "pollLast" removes and returns the last element of an array.
-     * @returns The last element of the array is being returned.
-     */
-    pollLast(): E | undefined;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     * /
-  
-     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The "addFirst" function adds an element to the beginning of an array.
-     * @param {E} element - The parameter "element" represents the element that you want to add to the
-     * beginning of the data structure.
-     */
-    addFirst(element: E): boolean;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     * /
-  
-     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The function "pollFirst" removes and returns the first element of an array.
-     * @returns The method `pollFirst()` is returning the first element of the array after removing it
-     * from the beginning. If the array is empty, it will return `undefined`.
-     */
-    pollFirst(): E | undefined;
-    /**
      * Time Complexity: O(n)
@@ -491,0 +438,0 @@ * Space Complexity: O(1)

dist/data-structures/queue/deque.js

@@ -771,63 +771,2 @@ "use strict";
     /**
-     * Time Complexity: Amortized O(1) - Similar to push, resizing leads to O(n).
-     * Space Complexity: O(n) - Due to potential resizing.
-     */
-    /**
-     * Time Complexity: Amortized O(1) - Similar to push, resizing leads to O(n).
-     * Space Complexity: O(n) - Due to potential resizing.
-     *
-     * The addLast function adds an element to the end of an array.
-     * @param {E} element - The element parameter represents the element that you want to add to the end of the
-     * data structure.
-     */
-    addLast(element) {
-        return this.push(element);
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The function "pollLast" removes and returns the last element of an array.
-     * @returns The last element of the array is being returned.
-     */
-    pollLast() {
-        return this.pop();
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     * /
-  
-     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The "addFirst" function adds an element to the beginning of an array.
-     * @param {E} element - The parameter "element" represents the element that you want to add to the
-     * beginning of the data structure.
-     */
-    addFirst(element) {
-        return this.unshift(element);
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     * /
-  
-     /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The function "pollFirst" removes and returns the first element of an array.
-     * @returns The method `pollFirst()` is returning the first element of the array after removing it
-     * from the beginning. If the array is empty, it will return `undefined`.
-     */
-    pollFirst() {
-        return this.shift();
-    }
-    /**
      * Time Complexity: O(n)
@@ -834,0 +773,0 @@ * Space Complexity: O(1)

dist/data-structures/queue/queue.d.ts

@@ -131,52 +131,2 @@ /**
      *
-     * The `peek` function returns the first element of the array `_elements` if it exists, otherwise it returns `undefined`.
-     * @returns The `peek()` method returns the first element of the data structure, represented by the `_elements` array at
-     * the `_offset` index. If the data structure is empty (size is 0), it returns `undefined`.
-     */
-    peek(): E | undefined;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `peekLast` function returns the last element in an array-like data structure, or undefined if the structure is empty.
-     * @returns The method `peekLast()` returns the last element of the `_elements` array if the array is not empty. If the
-     * array is empty, it returns `undefined`.
-     */
-    peekLast(): E | undefined;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The enqueue function adds a value to the end of a queue.
-     * @param {E} value - The value parameter represents the value that you want to add to the queue.
-     */
-    enqueue(value: E): boolean;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `dequeue` function removes and returns the first element from a queue, or returns undefined if the queue is empty.
-     * @returns The method is returning a value of type E or undefined.
-     */
-    dequeue(): E | undefined;
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
      * @param index
@@ -293,22 +243,2 @@ */
     /**
-     * The `get first` function returns the value of the head node in a linked list, or `undefined` if the list is empty.
-     * @returns The `get first()` method is returning the value of the `head` node if it exists, otherwise it returns `undefined`.
-     */
-    get first(): E | undefined;
-    /**
-     * The enqueue function adds a value to the end of an array.
-     * @param {E} value - The value parameter represents the value that you want to add to the queue.
-     */
-    enqueue(value: E): boolean;
-    /**
-     * The `dequeue` function removes and returns the first element from a queue, or returns undefined if the queue is empty.
-     * @returns The method is returning the element at the front of the queue, or undefined if the queue is empty.
-     */
-    dequeue(): E | undefined;
-    /**
-     * The `peek` function returns the value of the head node in a linked list, or `undefined` if the list is empty.
-     * @returns The `peek()` method is returning the value of the `head` node if it exists, otherwise it returns `undefined`.
-     */
-    peek(): E | undefined;
-    /**
      * Time Complexity: O(n)
@@ -315,0 +245,0 @@ * Space Complexity: O(n)

dist/data-structures/queue/queue.js

@@ -167,60 +167,2 @@ "use strict";
      *
-     * The `peek` function returns the first element of the array `_elements` if it exists, otherwise it returns `undefined`.
-     * @returns The `peek()` method returns the first element of the data structure, represented by the `_elements` array at
-     * the `_offset` index. If the data structure is empty (size is 0), it returns `undefined`.
-     */
-    peek() {
-        return this.first;
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `peekLast` function returns the last element in an array-like data structure, or undefined if the structure is empty.
-     * @returns The method `peekLast()` returns the last element of the `_elements` array if the array is not empty. If the
-     * array is empty, it returns `undefined`.
-     */
-    peekLast() {
-        return this.last;
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The enqueue function adds a value to the end of a queue.
-     * @param {E} value - The value parameter represents the value that you want to add to the queue.
-     */
-    enqueue(value) {
-        return this.push(value);
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
-     * The `dequeue` function removes and returns the first element from a queue, or returns undefined if the queue is empty.
-     * @returns The method is returning a value of type E or undefined.
-     */
-    dequeue() {
-        return this.shift();
-    }
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     */
-    /**
-     * Time Complexity: O(1)
-     * Space Complexity: O(1)
-     *
      * @param index
@@ -371,31 +313,2 @@ */
     /**
-     * The `get first` function returns the value of the head node in a linked list, or `undefined` if the list is empty.
-     * @returns The `get first()` method is returning the value of the `head` node if it exists, otherwise it returns `undefined`.
-     */
-    get first() {
-        var _a;
-        return (_a = this.head) === null || _a === void 0 ? void 0 : _a.value;
-    }
-    /**
-     * The enqueue function adds a value to the end of an array.
-     * @param {E} value - The value parameter represents the value that you want to add to the queue.
-     */
-    enqueue(value) {
-        return this.push(value);
-    }
-    /**
-     * The `dequeue` function removes and returns the first element from a queue, or returns undefined if the queue is empty.
-     * @returns The method is returning the element at the front of the queue, or undefined if the queue is empty.
-     */
-    dequeue() {
-        return this.shift();
-    }
-    /**
-     * The `peek` function returns the value of the head node in a linked list, or `undefined` if the list is empty.
-     * @returns The `peek()` method is returning the value of the `head` node if it exists, otherwise it returns `undefined`.
-     */
-    peek() {
-        return this.first;
-    }
-    /**
      * Time Complexity: O(n)
@@ -402,0 +315,0 @@ * Space Complexity: O(n)

package.json

 {
   "name": "red-black-tree-typed",
-  "version": "1.50.4",
+  "version": "1.50.5",
   "description": "RedBlackTree. Javascript & Typescript Data Structure.",
@@ -5,0 +5,0 @@ "main": "dist/index.js",

src/data-structures/base/iterable-base.ts

@@ -9,2 +9,4 @@ import { ElementCallback, EntryCallback, ReduceElementCallback, ReduceEntryCallback } from '../../types';
 
+  abstract get size(): number;
+
   /**
@@ -133,5 +135,10 @@ * Time Complexity: O(n)
    */
+
   /**
    * Time Complexity: O(n)
    * Space Complexity: O(1)
+   */
+  /**
+   * Time Complexity: O(n)
+   * Space Complexity: O(1)
    *
@@ -256,7 +263,2 @@ * The `forEach` function iterates over each key-value pair in a collection and executes a callback
    * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(n)
-   * Space Complexity: O(1)
    *
@@ -307,2 +309,4 @@ * The `reduce` function iterates over key-value pairs and applies a callback function to each pair,
 export abstract class IterableElementBase<E = any, C = any> {
+  abstract get size(): number;
+
   /**
@@ -373,5 +377,10 @@ * Time Complexity: O(n)
    */
+
   /**
    * Time Complexity: O(n)
    * Space Complexity: O(1)
+   */
+  /**
+   * Time Complexity: O(n)
+   * Space Complexity: O(1)
    *
@@ -456,7 +465,2 @@ * The "some" function checks if at least one element in a collection satisfies a given predicate.
    * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(n)
-   * Space Complexity: O(1)
    *
@@ -463,0 +467,0 @@ * The function checks if a given element exists in a collection.

src/data-structures/graph/abstract-graph.ts

@@ -85,2 +85,6 @@ /**
 
+  get size(): number {
+    return this._vertexMap.size;
+  }
+
   /**
@@ -87,0 +91,0 @@ * In TypeScript, a subclass inherits the interface implementation of its parent class, without needing to implement the same interface again in the subclass. This behavior differs from Java's approach. In Java, if a parent class implements an interface, the subclass needs to explicitly implement the same interface, even if the parent class has already implemented it.

src/data-structures/heap/heap.ts

@@ -203,3 +203,3 @@ /**
    */
-  has(element: E): boolean {
+  override has(element: E): boolean {
     return this.elements.includes(element);
@@ -206,0 +206,0 @@ }

src/data-structures/linked-list/doubly-linked-list.ts

@@ -197,10 +197,9 @@ /**
   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The push function adds a new node with the given value to the end of the doubly linked list.
-   * @param {E} value - The value to be added to the linked list.
+   * The push function adds a new element to the end of a doubly linked list.
+   * @param {E} element - The "element" parameter represents the value that you want to add to the
+   * doubly linked list.
+   * @returns The `push` method is returning a boolean value, `true`.
    */
-  push(value: E): boolean {
-    const newNode = new DoublyLinkedListNode(value);
+  push(element: E): boolean {
+    const newNode = new DoublyLinkedListNode(element);
     if (!this.head) {
@@ -224,8 +223,4 @@ this._head = newNode;
   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The `pop()` function removes and returns the value of the last node in a doubly linked list.
-   * @returns The method is returning the value of the removed node (removedNode.value) if the list is not empty. If the
-   * list is empty, it returns undefined.
+   * The `pop()` function removes and returns the value of the last element in a linked list.
+   * @returns The method is returning the value of the removed node.
    */
@@ -252,8 +247,4 @@ pop(): E | undefined {
   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The `shift()` function removes and returns the value of the first node in a doubly linked list.
-   * @returns The method `shift()` returns the value of the node that is removed from the beginning of the doubly linked
-   * list.
+   * The `shift()` function removes and returns the value of the first element in a doubly linked list.
+   * @returns The value of the removed node.
    */
@@ -280,11 +271,9 @@ shift(): E | undefined {
   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The unshift function adds a new node with the given value to the beginning of a doubly linked list.
-   * @param {E} value - The `value` parameter represents the value of the new node that will be added to the beginning of the
-   * doubly linked list.
+   * The unshift function adds a new element to the beginning of a doubly linked list.
+   * @param {E} element - The "element" parameter represents the value of the element that you want to
+   * add to the beginning of the doubly linked list.
+   * @returns The `unshift` method is returning a boolean value, `true`.
    */
-  unshift(value: E): boolean {
-    const newNode = new DoublyLinkedListNode(value);
+  unshift(element: E): boolean {
+    const newNode = new DoublyLinkedListNode(element);
     if (!this.head) {
@@ -819,69 +808,2 @@ this._head = newNode;
   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The addLast function adds a new node with the given value to the end of the doubly linked list.
-   * @param {E} value - The value to be added to the linked list.
-   */
-  addLast(value: E): boolean {
-    return this.push(value);
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The `pollLast()` function removes and returns the value of the last node in a doubly linked list.
-   * @returns The method is returning the value of the removed node (removedNode.value) if the list is not empty. If the
-   * list is empty, it returns undefined.
-   */
-  pollLast(): E | undefined {
-    return this.pop();
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The `pollFirst()` function removes and returns the value of the first node in a doubly linked list.
-   * @returns The method `shift()` returns the value of the node that is removed from the beginning of the doubly linked
-   * list.
-   */
-  pollFirst(): E | undefined {
-    return this.shift();
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The addFirst function adds a new node with the given value to the beginning of a doubly linked list.
-   * @param {E} value - The `value` parameter represents the value of the new node that will be added to the beginning of the
-   * doubly linked list.
-   */
-  addFirst(value: E): void {
-    this.unshift(value);
-  }
-
-  /**
    * The function returns an iterator that iterates over the values of a linked list.
@@ -888,0 +810,0 @@ */

src/data-structures/linked-list/singly-linked-list.ts

@@ -96,2 +96,20 @@ /**
 
+  /**
+   * The above function returns the value of the first element in a linked list, or undefined if the
+   * list is empty.
+   * @returns The value of the first node in the linked list, or undefined if the linked list is empty.
+   */
+  get first(): E | undefined {
+    return this.head?.value;
+  }
+
+  /**
+   * The function returns the value of the last element in a linked list, or undefined if the list is
+   * empty.
+   * @returns The value of the last node in the linked list, or undefined if the linked list is empty.
+   */
+  get last(): E | undefined {
+    return this.tail?.value;
+  }
+
   protected _size: number = 0;
@@ -134,4 +152,2 @@
    * Space Complexity: O(1)
-   * Constant time, as it involves basic pointer adjustments.
-   * Constant space, as it only creates a new node.
    */
@@ -143,8 +159,9 @@
    *
-   * The `push` function adds a new node with the given value to the end of a singly linked list.
-   * @param {E} value - The "value" parameter represents the value that you want to add to the linked list. It can be of
-   * any type (E) as specified in the generic type declaration of the class or function.
+   * The push function adds a new element to the end of a singly linked list.
+   * @param {E} element - The "element" parameter represents the value of the element that you want to
+   * add to the linked list.
+   * @returns The `push` method is returning a boolean value, `true`.
    */
-  push(value: E): boolean {
-    const newNode = new SinglyLinkedListNode(value);
+  push(element: E): boolean {
+    const newNode = new SinglyLinkedListNode(element);
     if (!this.head) {
@@ -162,19 +179,2 @@ this._head = newNode;
   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The `push` function adds a new node with the given value to the end of a singly linked list.
-   * @param {E} value - The "value" parameter represents the value that you want to add to the linked list. It can be of
-   * any type (E) as specified in the generic type declaration of the class or function.
-   */
-  addLast(value: E): boolean {
-    return this.push(value);
-  }
-
-  /**
    * Time Complexity: O(n)
@@ -189,6 +189,5 @@ * Space Complexity: O(1)
    *
-   * The `pop()` function removes and returns the value of the last element in a linked list, updating the head and tail
-   * pointers accordingly.
-   * @returns The method `pop()` returns the value of the node that is being removed from the end of the linked list. If
-   * the linked list is empty, it returns `undefined`.
+   * The `pop` function removes and returns the value of the last element in a linked list.
+   * @returns The method is returning the value of the element that is being popped from the end of the
+   * list.
    */
@@ -217,20 +216,2 @@ pop(): E | undefined {
   /**
-   * Time Complexity: O(n)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(n)
-   * Space Complexity: O(1)
-   *
-   * The `pollLast()` function removes and returns the value of the last element in a linked list, updating the head and tail
-   * pointers accordingly.
-   * @returns The method `pop()` returns the value of the node that is being removed from the end of the linked list. If
-   * the linked list is empty, it returns `undefined`.
-   */
-  pollLast(): E | undefined {
-    return this.pop();
-  }
-
-  /**
    * Time Complexity: O(1)
@@ -244,4 +225,4 @@ * Space Complexity: O(1)
    *
-   * The `shift()` function removes and returns the value of the first node in a linked list.
-   * @returns The value of the node that is being removed from the beginning of the linked list.
+   * The `shift()` function removes and returns the value of the first element in a linked list.
+   * @returns The value of the removed node.
    */
@@ -265,24 +246,9 @@ shift(): E | undefined {
    *
-   * The `pollFirst()` function removes and returns the value of the first node in a linked list.
-   * @returns The value of the node that is being removed from the beginning of the linked list.
+   * The unshift function adds a new element to the beginning of a singly linked list.
+   * @param {E} element - The "element" parameter represents the value of the element that you want to
+   * add to the beginning of the singly linked list.
+   * @returns The `unshift` method is returning a boolean value, `true`.
    */
-  pollFirst(): E | undefined {
-    return this.shift();
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The unshift function adds a new node with the given value to the beginning of a singly linked list.
-   * @param {E} value - The parameter "value" represents the value of the new node that will be added to the beginning of the
-   * linked list.
-   */
-  unshift(value: E): boolean {
-    const newNode = new SinglyLinkedListNode(value);
+  unshift(element: E): boolean {
+    const newNode = new SinglyLinkedListNode(element);
     if (!this.head) {
@@ -300,22 +266,4 @@ this._head = newNode;
   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The addFirst function adds a new node with the given value to the beginning of a singly linked list.
-   * @param {E} value - The parameter "value" represents the value of the new node that will be added to the beginning of the
-   * linked list.
-   */
-  addFirst(value: E): boolean {
-    return this.unshift(value);
-  }
-
-  /**
    * Time Complexity: O(n)
    * Space Complexity: O(1)
-   * Linear time, where n is the index, as it may need to traverse the list to find the desired node.
    */
@@ -322,0 +270,0 @@

src/data-structures/queue/deque.ts

@@ -815,69 +815,2 @@ /**
   /**
-   * Time Complexity: Amortized O(1) - Similar to push, resizing leads to O(n).
-   * Space Complexity: O(n) - Due to potential resizing.
-   */
-
-  /**
-   * Time Complexity: Amortized O(1) - Similar to push, resizing leads to O(n).
-   * Space Complexity: O(n) - Due to potential resizing.
-   *
-   * The addLast function adds an element to the end of an array.
-   * @param {E} element - The element parameter represents the element that you want to add to the end of the
-   * data structure.
-   */
-  addLast(element: E): boolean {
-    return this.push(element);
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The function "pollLast" removes and returns the last element of an array.
-   * @returns The last element of the array is being returned.
-   */
-  pollLast(): E | undefined {
-    return this.pop();
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   * /
-
-   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The "addFirst" function adds an element to the beginning of an array.
-   * @param {E} element - The parameter "element" represents the element that you want to add to the
-   * beginning of the data structure.
-   */
-  addFirst(element: E): boolean {
-    return this.unshift(element);
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   * /
-
-   /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The function "pollFirst" removes and returns the first element of an array.
-   * @returns The method `pollFirst()` is returning the first element of the array after removing it
-   * from the beginning. If the array is empty, it will return `undefined`.
-   */
-  pollFirst(): E | undefined {
-    return this.shift();
-  }
-
-  /**
    * Time Complexity: O(n)
@@ -884,0 +817,0 @@ * Space Complexity: O(1)

src/data-structures/queue/queue.ts

@@ -190,68 +190,2 @@ /**
    *
-   * The `peek` function returns the first element of the array `_elements` if it exists, otherwise it returns `undefined`.
-   * @returns The `peek()` method returns the first element of the data structure, represented by the `_elements` array at
-   * the `_offset` index. If the data structure is empty (size is 0), it returns `undefined`.
-   */
-  peek(): E | undefined {
-    return this.first;
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The `peekLast` function returns the last element in an array-like data structure, or undefined if the structure is empty.
-   * @returns The method `peekLast()` returns the last element of the `_elements` array if the array is not empty. If the
-   * array is empty, it returns `undefined`.
-   */
-  peekLast(): E | undefined {
-    return this.last;
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The enqueue function adds a value to the end of a queue.
-   * @param {E} value - The value parameter represents the value that you want to add to the queue.
-   */
-  enqueue(value: E): boolean {
-    return this.push(value);
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
-   * The `dequeue` function removes and returns the first element from a queue, or returns undefined if the queue is empty.
-   * @returns The method is returning a value of type E or undefined.
-   */
-  dequeue(): E | undefined {
-    return this.shift();
-  }
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   */
-
-  /**
-   * Time Complexity: O(1)
-   * Space Complexity: O(1)
-   *
    * @param index
@@ -416,34 +350,2 @@ */
   /**
-   * The `get first` function returns the value of the head node in a linked list, or `undefined` if the list is empty.
-   * @returns The `get first()` method is returning the value of the `head` node if it exists, otherwise it returns `undefined`.
-   */
-  get first(): E | undefined {
-    return this.head?.value;
-  }
-
-  /**
-   * The enqueue function adds a value to the end of an array.
-   * @param {E} value - The value parameter represents the value that you want to add to the queue.
-   */
-  enqueue(value: E): boolean {
-    return this.push(value);
-  }
-
-  /**
-   * The `dequeue` function removes and returns the first element from a queue, or returns undefined if the queue is empty.
-   * @returns The method is returning the element at the front of the queue, or undefined if the queue is empty.
-   */
-  dequeue(): E | undefined {
-    return this.shift();
-  }
-
-  /**
-   * The `peek` function returns the value of the head node in a linked list, or `undefined` if the list is empty.
-   * @returns The `peek()` method is returning the value of the `head` node if it exists, otherwise it returns `undefined`.
-   */
-  peek(): E | undefined {
-    return this.first;
-  }
-
-  /**
    * Time Complexity: O(n)
@@ -450,0 +352,0 @@ * Space Complexity: O(n)

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