{"id":2895,"date":"2026-03-27T14:57:31","date_gmt":"2026-03-27T09:27:31","guid":{"rendered":"https:\/\/codematrix.co.in\/blog\/?page_id=2895"},"modified":"2026-03-27T14:58:06","modified_gmt":"2026-03-27T09:28:06","slug":"linked-list-in-c","status":"publish","type":"page","link":"https:\/\/codematrix.co.in\/blog\/linked-list-in-c\/","title":{"rendered":"Linked List in C++\u00a0"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2895\" class=\"elementor elementor-2895\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5101f8a e-flex e-con-boxed e-con e-parent\" data-id=\"5101f8a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8eb39c6 elementor-widget elementor-widget-html\" data-id=\"8eb39c6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n    \/* --- Brand Styling --- *\/\r\n    :root {\r\n        --brand-purple: #9C00E4;\r\n        --brand-light: #f3e8ff;\r\n    }\r\n\r\n    \/* Reset & Base *\/\r\n    .python-full-layout * { box-sizing: border-box; }\r\n\r\n    \/* Layout Adjustments *\/\r\n    .python-full-layout { \r\n        display: flex; \r\n        gap: 30px; \r\n        padding: 20px; \r\n        max-width: 1200px; \r\n        margin: 0 auto;\r\n        background: #fdfbff; \r\n    }\r\n\r\n    .sidebar { \r\n        width: 280px; \r\n        position: sticky; \r\n        top: 20px; \r\n        height: fit-content; \r\n        flex-shrink: 0;\r\n    }\r\n\r\n    .sidebar .topic { \r\n        display: block; \r\n        padding: 12px; \r\n        text-decoration: none; \r\n        color: #444; \r\n        border-radius: 8px; \r\n        margin-bottom: 8px; \r\n        background: #fff;\r\n        border: 1px solid #eee;\r\n        transition: 0.3s;\r\n    }\r\n\r\n    .sidebar .topic.active { \r\n        background: var(--brand-purple); \r\n        color: white; \r\n        border-color: var(--brand-purple);\r\n    }\r\n\r\n    \/* Main Content *\/\r\n    .main-content { \r\n        flex: 1; \r\n        font-family: 'Segoe UI', sans-serif; \r\n        min-width: 0; \r\n    }\r\n\r\n    .article-card { \r\n        background: white; \r\n        padding: 30px; \r\n        border-radius: 15px; \r\n        box-shadow: 0 4px 15px rgba(0,0,0,0.05); \r\n    }\r\n\r\n    h1 { color: var(--brand-purple); font-size: 2.2rem; margin-bottom: 20px; }\r\n    h2 { color: #333; margin-top: 30px; border-left: 4px solid var(--brand-purple); padding-left: 15px; }\r\n    \r\n    .custom-img { \r\n        display: block; \r\n        margin: 30px auto; \r\n        width: 100%; \r\n        max-width: 600px; \r\n        border: 2px solid #e9d5ff; \r\n        border-radius: 10px;\r\n    }\r\n\r\n    pre { \r\n        background: #1a1a2e; \r\n        color: #fff; \r\n        padding: 20px; \r\n        border-radius: 10px; \r\n        overflow-x: auto; \r\n        margin: 20px 0;\r\n        white-space: pre;\r\n    }\r\n\r\n    table { \r\n        width: 100%; \r\n        border-collapse: collapse; \r\n        margin: 20px 0; \r\n    }\r\n\r\n    table th, table td { \r\n        border: 1px solid #eee; \r\n        padding: 12px; \r\n        text-align: left; \r\n    }\r\n\r\n    table th { background: #f8f9fa; color: var(--brand-purple); }\r\n\r\n    \/* Responsive *\/\r\n    @media (max-width: 991px) {\r\n        .python-full-layout { flex-direction: column; }\r\n        .sidebar { width: 100%; position: relative; top: 0; }\r\n    }\r\n<\/style>\r\n\r\n<div class=\"python-full-layout\">\r\n    <aside class=\"sidebar\">\r\n        <h2 style=\"font-size: 1.2rem; color: var(--brand-purple); margin-bottom: 15px;\">Dynamic Chains<\/h2>\r\n        <a href=\"#intro\" class=\"topic active\">What is a Linked List?<\/a>\r\n        <a href=\"#node\" class=\"topic\">1. Anatomy of a Node<\/a>\r\n        <a href=\"#ops\" class=\"topic\">2. Basic Operations<\/a>\r\n        <a href=\"#types\" class=\"topic\">3. Types of Lists<\/a>\r\n        <a href=\"#mcq\" class=\"topic\">Practice MCQs<\/a>\r\n    <\/aside>\r\n\r\n    <main class=\"main-content\">\r\n        <article class=\"article-card\">\r\n            \r\n            <header id=\"intro\">\r\n                <h1>Linked List in C++: Flexible Memory<\/h1>\r\n                <p>A <strong>Linked List in C++<\/strong> is a linear data structure where elements are not stored in contiguous memory locations. Instead, each element is a separate object called a <strong>Node<\/strong>. These nodes are linked together using pointers. Unlike arrays, a <strong>Linked List in C++<\/strong> can grow or shrink in size during execution, making it the preferred choice when the number of elements is unknown or frequently changing.<\/p>\r\n            <\/header>\r\n\r\n            \r\n\r\n            <section id=\"node\">\r\n                <h2>1. Anatomy of a Node<\/h2>\r\n                <p>In a <strong>Linked List in C++<\/strong>, a node is typically a <code>struct<\/code> or <code>class<\/code>. It contains two parts: the <strong>Data<\/strong> (which stores the actual value) and the <strong>Next Pointer<\/strong> (which stores the memory address of the following node). The list begins at a special pointer called the <strong>Head<\/strong>, and the last node's pointer is set to <code>nullptr<\/code> to signal the end of the chain.<\/p>\r\n                \r\n                <table>\r\n                    <thead>\r\n                        <tr>\r\n                            <th>Feature<\/th>\r\n                            <th>Description<\/th>\r\n                        <\/tr>\r\n                    <\/thead>\r\n                    <tbody>\r\n                        <tr><td>Allocation<\/td><td>Dynamic (happens at runtime via 'new').<\/td><\/tr>\r\n                        <tr><td>Insertion<\/td><td>Fast $O(1)$ if the position is known.<\/td><\/tr>\r\n                        <tr><td>Search<\/td><td>Sequential $O(n)$; no random access.<\/td><\/tr>\r\n                    <\/tbody>\r\n                <\/table>\r\n            <\/section>\r\n\r\n            <section id=\"ops\">\r\n                <h2>2. Basic Operations<\/h2>\r\n                <p>Manipulating a <strong>Linked List in C++<\/strong> requires careful pointer management. To insert a node, you update the pointer of the previous node to point to the new one. To delete, you bypass the target node by pointing its predecessor to its successor. Because <strong>Linked Lists in C++<\/strong> don't require shifting elements (like arrays do), insertions and deletions are highly efficient once you reach the target location.<\/p>\r\n            <\/section>\r\n\r\n            <section id=\"types\">\r\n                <h2>3. Types of Linked Lists<\/h2>\r\n                <p>There are several variations of <strong>Linked Lists in C++<\/strong>:\r\n                <ul>\r\n                    <li><strong>Singly Linked:<\/strong> Nodes point only to the next node.<\/li>\r\n                    <li><strong>Doubly Linked:<\/strong> Nodes point to both the next and the previous nodes.<\/li>\r\n                    <li><strong>Circular:<\/strong> The last node points back to the first node.<\/li>\r\n                <\/ul>\r\n                While the STL provides a <code>std::list<\/code> (doubly linked), implementing your own is a classic way to master pointer logic.<\/p>\r\n                \r\n                \r\n\r\n                <pre><code id=\"typingCode\"><\/code><\/pre>\r\n            <\/section>\r\n\r\n            <section id=\"mcq\" class=\"practice-mcqs\">\r\n                <h2>Practice MCQs on Linked Lists<\/h2>\r\n                <div class=\"mcq-box\" style=\"background: #f9f4ff; padding: 20px; border-radius: 10px; border: 1px solid #e9d5ff;\">\r\n                    <p><strong>1. What does the last node of a Singly Linked List point to?<\/strong><br>\r\n                    A) Head | B) <strong>nullptr<\/strong> | C) Itself<\/p>\r\n                    \r\n                    <p><strong>2. Which of the following is an advantage of Linked Lists over Arrays?<\/strong><br>\r\n                    A) Faster access | B) <strong>Dynamic size<\/strong> | C) Less memory per element<\/p>\r\n\r\n                    <p><strong>3. What is the time complexity to search for an element in a Linked List?<\/strong><br>\r\n                    A) O(1) | B) O(log n) | C) <strong>O(n)<\/strong><\/p>\r\n                <\/div>\r\n            <\/section>\r\n\r\n            <div style=\"text-align: center; margin-top: 40px;\">\r\n                <a href=\"https:\/\/codematrix.co.in\/courses\" target=\"_blank\" style=\"background: var(--brand-purple); color: white; padding: 12px 25px; text-decoration: none; border-radius: 8px; display: inline-block; font-weight: bold;\">\r\n                    \ud83d\ude80 Master Pointers & Linked Data!\r\n                <\/a>\r\n            <\/div>\r\n\r\n        <\/article>\r\n    <\/main>\r\n<\/div>\r\n\r\n<script>\r\nwindow.addEventListener('DOMContentLoaded', () => {\r\n    const sections = document.querySelectorAll('header[id], section[id]');\r\n    const navLinks = document.querySelectorAll('.sidebar .topic');\r\n\r\n    const observer = new IntersectionObserver((entries) => {\r\n        entries.forEach(entry => {\r\n            if (entry.isIntersecting) {\r\n                navLinks.forEach(link => {\r\n                    link.classList.remove('active');\r\n                    if (link.getAttribute('href') === `#${entry.target.id}`) {\r\n                        link.classList.add('active');\r\n                    }\r\n                });\r\n            }\r\n        });\r\n    }, { threshold: 0.5 });\r\n    sections.forEach(section => observer.observe(section));\r\n});\r\n\r\nconst codeText = `#include <iostream>\r\nusing namespace std;\r\n\r\n\/\/ 1. Define Node Structure\r\nstruct Node {\r\n    int data;\r\n    Node* next;\r\n};\r\n\r\n\/\/ 2. Simple Linked List Traversal\r\nvoid printList(Node* n) {\r\n    while (n != nullptr) {\r\n        cout << n->data << \" -> \";\r\n        n = n->next;\r\n    }\r\n    cout << \"NULL\" << endl;\r\n}\r\n\r\nint main() {\r\n    \/\/ 3. Manually create nodes\r\n    Node* head = new Node();\r\n    Node* second = new Node();\r\n\r\n    head->data = 10;\r\n    head->next = second;\r\n\r\n    second->data = 20;\r\n    second->next = nullptr;\r\n\r\n    printList(head);\r\n    return 0;\r\n}\r\n`;\r\n\r\nlet i = 0;\r\nfunction typeCode() {\r\n    const target = document.getElementById(\"typingCode\");\r\n    if (target && i < codeText.length) {\r\n        target.textContent += codeText.charAt(i);\r\n        i++;\r\n        setTimeout(typeCode, 20);\r\n    }\r\n}\r\nwindow.addEventListener(\"DOMContentLoaded\", typeCode);\r\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Dynamic Chains What is a Linked List? 1. Anatomy of a Node 2. Basic Operations 3. Types of Lists Practice MCQs Linked List in C++: Flexible Memory A Linked List in C++ is a linear data structure where elements are not stored in contiguous memory locations. Instead, each element is a separate object called a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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