{"id":11461,"date":"2026-01-31T17:57:38","date_gmt":"2026-01-31T12:27:38","guid":{"rendered":"https:\/\/namastedev.com\/blog\/?p=11461"},"modified":"2026-01-31T18:49:20","modified_gmt":"2026-01-31T13:19:20","slug":"trie-and-trienode-structure","status":"publish","type":"post","link":"https:\/\/namastedev.com\/blog\/trie-and-trienode-structure\/","title":{"rendered":"Trie and TrieNode Structure"},"content":{"rendered":"\n<!-- PrismJS for Syntax Highlighting -->\n<link href=\"https:\/\/cdn.jsdelivr.net\/npm\/prismjs@1.29.0\/themes\/prism-tomorrow.min.css\" rel=\"stylesheet\">\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/prismjs@1.29.0\/prism.min.js\"><\/script>\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/prismjs@1.29.0\/plugins\/autoloader\/prism-autoloader.min.js\"><\/script>\n\n<style>\n.wp_blog_theme {\n  --primary: #E58C32;\n  --secondary: #030302;\n  --light-bg: #fef9f4;\n  --text-dark: #2d2d2d;\n  --tab-radius: 12px;\n  --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);\n  --code-bg: #001f3f;\n  --code-text: #d4f1ff;\n}\n\n.wp_blog_container {\n  font-family: 'Segoe UI', sans-serif;\n  background: var(--light-bg);\n  margin: 0;\n  padding: 0;\n  color: var(--text-dark);\n}\n\n\/* Heading *\/\n.wp_blog_main-heading {\n  text-align: center;\n  font-size: 2.4rem;\n  color: var(--primary);\n  margin-top: 2.5rem;\n  font-weight: bold;\n}\n\n\/* Explanation Card *\/\n.wp_blog_explanation,\n.wp_blog_code-tabs-container {\n  max-width: 940px;\n  margin: 2rem auto;\n  padding: 2rem;\n  background: white;\n  border-radius: var(--tab-radius);\n  box-shadow: var(--shadow);\n}\n\n\/* Text and Visuals *\/\n.wp_blog_explanation h2 {\n  font-size: 1.4rem;\n  color: var(--primary);\n  margin-bottom: 0.5rem;\n}\n\n.wp_blog_explanation p,\n.wp_blog_explanation li {\n  font-size: 1.05rem;\n  line-height: 1.7;\n  margin: 0.5rem 0;\n}\n\n.wp_blog_explanation code {\n  background: #fef9f4; 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\/* makes it the reference for absolute children *\/\n}\n\n.wp_blog_toggle-btn {\n  position: absolute;\n  top: 1rem;\n  right: 1rem;\n  z-index: 9999;\n  padding: 0.5rem 0.8rem;\n  border-radius: 10%;\n  background: var(--primary);\n  color: white;\n  font-weight: bold;\n  cursor: pointer;\n  border: none;\n  box-shadow: var(--shadow);\n  transition: background 0.3s, transform 0.2s;\n}\n\n.wp_blog_toggle-btn:hover {\n  background: #cc772e;\n}\n\n.wp_blog_theme.dark-mode .wp_blog_code-tabs-container {\n  background: #1e1e1e;\n}\n<\/style>\n\n<div class=\"wp_blog_container wp_blog_theme\">\n    <button id=\"blogNotesThemeToggle\" class=\"wp_blog_toggle-btn\">\ud83c\udf19<\/button>\n\n  <h1 class=\"wp_blog_main-heading\"><\/h1>\n\n  <div class=\"wp_blog_explanation\">\n    <h2>Trie Node Structure<\/h2>\n    <img decoding=\"async\" src=\"https:\/\/namastedev.com\/blog\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-5.32.17-PM.png\" alt=\"\">\n    <h3>Code:<\/h3>\n    <strong>\n        <pre>\n            class TrieNode {\n                constructor() {\n                    this.children = {};\n                    this.isEndOfWord = false;\n                }\n            }\n        <\/pre>\n    <\/strong>\n\n    <h2>Trie Structure<\/h2>\n    <h3>Code:<\/h3>\n    <strong>\n        <pre>\n            class Trie {\n                constructor() {\n                    this.root = new TrieNode();\n                }\n            }\n        <\/pre>\n    <\/strong>\n    <h2>Points to Remember<\/h2>\n    <ul>\n        <li>The <strong>root node<\/strong> is the starting point of a Trie data structure.<\/li>\n        <li>Each Trie node has two main properties: <code>children<\/code> and an <code>end-of-word<\/code> flag.<\/li>\n        <li>A Trie requires only a <strong>root node<\/strong>, and all words and operations originate from it.<\/li>\n    <\/ul>\n   \n    <h2>Trie Operations<\/h2>\n    <h3>Insert, Search, Prefix<\/h3>\n    <p><strong><code>ant, and, cat, cap, car, card<\/code><\/strong><\/p>\n    <h2>Insert:<\/h2>\n    <img decoding=\"async\" src=\"https:\/\/namastedev.com\/blog\/wp-content\/uploads\/2026\/01\/Screenshot-2026-01-31-at-5.55.15-PM.png\" alt=\"\">\n\n    <ul>\n        <li><strong>Search(cat):<\/strong><code> It checks the path and verifies the end-of-word flag, then returns true.<\/code><\/li>\n        <li><strong>Search(cal):<\/strong> <code>It returns false when both the path and the end-of-word flag are missing.<\/code><\/li>\n        <li><strong>Search(ca):<\/strong> <code>It checks the path; if the path exists but the end-of-word flag does not, it returns false.<\/code><\/li>\n    <\/ul>\n\n    <ul>\n        <li><strong>Prefix(cat):<\/strong> <code>True<\/code><\/li>\n        <li><strong>Prefix(ca):<\/strong> <code>True<\/code><\/li>\n    <\/ul>\n    <p><strong><code>In prefix search, the end-of-word flag is not checked, which is why it returns true in both cases.<\/code><\/strong><\/p>\n    \n    <h2>Delete Operation<\/h2>\n    <p>\n        <strong>\n                This operation also exists in the <strong>Trie data structure<\/strong> but it is generally not used in practice. When a Trie contains billions of words, <code>delete operations<\/code> become inefficient and difficult to manage.\n        <\/strong>\n    <\/p>\n\n\n<\/div>\n<\/div>\n\n<script>\ndocument.addEventListener(\"DOMContentLoaded\", () => {\n  const buttons = document.querySelectorAll(\".wp_blog_code-tab-button\");\n  const contents = document.querySelectorAll(\".wp_blog_code-tab-content\");\n\n  buttons.forEach((button) => {\n    button.addEventListener(\"click\", () => {\n      const lang = button.getAttribute(\"data-lang\");\n\n      buttons.forEach((btn) => btn.classList.remove(\"active\"));\n      contents.forEach((content) => content.classList.remove(\"active\"));\n\n      button.classList.add(\"active\");\n      document\n        .querySelector(`.wp_blog_code-tab-content[data-lang=\"${lang}\"]`)\n        .classList.add(\"active\");\n    });\n  });\n\n  const themeToggle = document.getElementById(\"blogNotesThemeToggle\");\n  const themeContainer = document.querySelector(\".wp_blog_theme\");\n\n  themeToggle.addEventListener(\"click\", () => {\n    themeContainer.classList.toggle(\"dark-mode\");\n    themeToggle.textContent =\n      themeContainer.classList.contains(\"dark-mode\") ? \"\u2600\ufe0f\" : \"\ud83c\udf19\";\n  });\n});\n<\/script>\n\n","protected":false},"excerpt":{"rendered":"<p>\ud83c\udf19 Trie Node Structure Code: class TrieNode { constructor() { this.children = {}; this.isEndOfWord = false; } } Trie Structure Code: class Trie { constructor() { this.root = new TrieNode(); } } Points to Remember The root node is the starting point of a Trie data structure. Each Trie node has two main properties: children<\/p>\n","protected":false},"author":108,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[210,322,260,176,175,211,811,810,174,172,173],"tags":[],"class_list":["post-11461","post","type-post","status-publish","format-standard","category-algorithms","category-algorithms-and-data-structures","category-c-c-plus-plus","category-csharp","category-cplusplus","category-data-structures","category-data-structures-and-algorithms","category-dsa","category-java","category-javascript","category-python"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/posts\/11461","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/users\/108"}],"replies":[{"embeddable":true,"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/comments?post=11461"}],"version-history":[{"count":1,"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/posts\/11461\/revisions"}],"predecessor-version":[{"id":11464,"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/posts\/11461\/revisions\/11464"}],"wp:attachment":[{"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/media?parent=11461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/categories?post=11461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/namastedev.com\/blog\/wp-json\/wp\/v2\/tags?post=11461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}