Skill Topic · Cinematic

📘 DSA — Trie (Prefix Tree)

Words dhoondne ka sabse fast tareeqa — prefix power! 🔤

Overview

📘 DSA — Trie (Prefix Tree) — Quick Facts

📌

Phone Feature: Trie Term

🎯

Contact list: Trie me stored words

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Type "An": Prefix search

🔑

Suggestions appear: Autocomplete (DFS from prefix)

Topic 1

🎯 Real-World Analogy: Phone Contacts Autocomplete 📱🔤

📚 Trie samajhne ka sabse acha tareeqa hai phone me contacts search karna! 📱 Jab tum phone…

Topic 2

📌 1. Trie Kya Hai?

💡 Trie = Prefix Tree — Characters ek ek karke store karti hai! | Property | Detail |…

Topic 3

📌 2. Trie Implementation

🎯 `javascript // ═══ Trie Node — har node me children map + isEnd flag ═══ class TrieNode {…

Topic 4

📌 3. Autocomplete Feature

⭐ `javascript // ═══ Autocomplete — prefix type karo, saare matching words lo ═══ class…

Topic 5

📌 4. Classic Trie Problems

🔑 `javascript // ═══ Word Search in Grid (Boggle) ═══ // Grid me given words dhoondo — Trie…

Topic 6

📌 5. Array-based Trie (Faster)

✨ `javascript // ═══ Fixed charset (a-z) ke liye array faster hai ═══ class TrieArray {…

Topic 7

📌 6. Complexity Table

🌟 | Operation | Time | Space | |---|---|---| | Insert | O(m) ✅ | O(m) per word | | Search |…

Topic 8

🚫 Common Mistakes

🚀 | # | Galti ❌ | Sahi Tareeqa ✅ | |---|---|---| | 1 | search me isEnd check bhoolna |…

Topic 9

💪 Practice Exercises

📚 | Level | Exercise | Hint | |---|---|---| | 🟢 Beginner | Trie me insert, search,…

Topic 10

📋 Summary Table

💡 | Topic | Key Takeaway | |---|---| | Trie | Prefix tree, character by character | |…

Diagram

Visual Flow

📊 Diagram visualization — details in narration

Quick Quiz

Quiz — Question 1

📘 DSA — Trie (Prefix Tree) ka sabse sahi definition kya hai?

Quick Quiz

Quiz — Question 2

📘 DSA — Trie (Prefix Tree) ka 'Contact list' kya hai?

Complete! 🎉

📘 DSA — Trie (Prefix Tree) Complete!

Aliens School · HIEN · Cinematic Knowledge

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