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NMD Java Backend
06. Array & Two Pointers
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NMD Java Backend
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Java
Environment Setup
Environment Setup
Overview
Install JDK 21
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Git and GitHub
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Java Fundamentals
Java Fundamentals
Overview
JVM — How it works
Variables & Data Types
Operators
Control Flow — if / else / switch
Loops — for / while / do-while / for-each
Arrays — 1D & 2D
String and StringBuilder
Methods and Pass-by-value
Enum
File I/O
OOP — Class and Object
Encapsulation and Constructor
Inheritance
Polymorphism
Abstract Class
Records
Interface
instanceof and Type Casting
Exercises
Exercises
Overview
Phase 1 — Language Fundamentals
Phase 1 — Language Fundamentals
Overview
01. Variables, Data Types, Operators
02. Conditionals
03. Loops
04. Methods
05. String
Phase 2 — Programming Thinking
Phase 2 — Programming Thinking
Overview
06. Array & Two Pointers
07. HashMap & HashSet
08. Stack & Queue
09. Recursion
Phase 3 — Core Algorithms
Phase 3 — Core Algorithms
Overview
10. Sorting & Binary Search
11. Sliding Window
12. Linked List
13. Tree & Graph Basics
Phase 4 — Java Advanced
Phase 4 — Java Advanced
Overview
14. OOP
15. Collections Framework
16. Stream API & Lambda
17. Exception & DateTime
18. Concurrency
06. Array & Two Pointers
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