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Hash Table

Hash table ek fundamental data structure hai jo key-value pairs store karti hai aur O(1) average…

Overview
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Hash Table — Quick Facts

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Property: Detail

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Term: Hash Table

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Category: Core Data Structure

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Also Known As: Hash Map, Dictionary, Associative…

Topic 1
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Infobox

📚 | Property | Detail | |---|---| | Term | Hash Table | | Category | Core Data Structure |…
Topic 2
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History

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1953 — Hans Peter Luhn (IBM) ne…

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1956 — Arnold Dumey ne first…

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1960s — Hash tables widely adopted…

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1970s-80s — Collision resolution…

Topic 3
📥 ⚙️ 🔬 💡

How Hash Table Works

🎯 Three Core Components 1. Hash Function — Key (string, number, object) ko ek integer (hash…
Topic 4
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Put and Get Flow

⭐ `mermaid sequenceDiagram participant App as Application participant HT as Hash Table…
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📥 📥 🧠 🔬 💡 🎯

Hash Function Role

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Agar saari keys same bucket me…

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O(1) → O(n) — performance…

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Isse hash flooding attack kehte…

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djb2 — Simple, fast string hash

Topic 6
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Collision Handling

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Collision hone par naya entry same…

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Lookup: bucket jaao → list…

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Pros: Simple, load factor > 1 bhi…

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Cons: Extra memory (pointers),…

Topic 7
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Operations aur Time Complexity

🌟 | Operation | Average Case | Worst Case | Notes | |---|---|---|---| | Insert (put) | O(1)…
Topic 8
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Load Factor aur Rehashing

🚀 Load Factor $$\alpha = \frac{n}{m}$$ Jahan $n$ = stored entries, $m$ = bucket count. |…
Topic 9
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Comparison: Hash Table vs Other Data Structures

📚 | Aspect | Hash Table | Array | Linked List | BST (Balanced) | Skip List |…
Topic 10
💡 📊 🔬

Real-World Applications

💡 1. Database Indexing Hash indexes me databases exact-match queries O(1) me resolve karti…
Topic 11
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Design Considerations

🎯 1. Hash Function Quality — Good distribution, fast computation, deterministic. Poor…
Comparison
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Comparison: Hash Table vs Other Data Structures

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Search: O(1) avg

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Insert: O(1) avg

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Delete: O(1) avg

Diagram
📥 ⚙️ 🔬 💡

Visual Flow

📊 Diagram visualization — details in narration
Related Topics

See Also

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Hash Map

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Hash Set

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Hash Function

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Array

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Linked List

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Binary Search Tree

Quick Quiz
🧠 QUIZ TIME

Quiz — Question 1

Hash Table ka sabse sahi definition kya hai?

Quick Quiz
🧠 QUIZ TIME

Quiz — Question 2

Hash Table ka 'Term' kya hai?

Complete! 🎉
COMPLETE

Hash Table Complete!

Aliens Wiki · HIEN · Cinematic Knowledge

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Hash Table Complete

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Hash Map

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