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Algorithms & Data Structures

Learning resources for algorithms, data structures, and OOP patterns

Topics

  • Pointers

    In-depth guide to C/C++ pointers, memory management, and common patterns.

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  • Function Pointers

    Comparison of function pointers across languages and callback patterns.

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  • OOP Patterns

    Object-oriented programming patterns with Python examples.

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Learning Path

flowchart TD
    subgraph Fundamentals
        A[Variables & Memory] --> B[Pointers]
        B --> C[Dynamic Allocation]
    end

    subgraph Advanced
        C --> D[Function Pointers]
        D --> E[Callbacks]
        E --> F[Design Patterns]
    end

    subgraph OOP
        F --> G[SOLID Principles]
        G --> H[Creational Patterns]
        H --> I[Structural Patterns]
        I --> J[Behavioral Patterns]
    end

Concept Overview

Memory & Pointers

Concept Language Description
Raw Pointers C/C++ Direct memory address manipulation
Smart Pointers C++ Automatic memory management
References C++/Java Alias to existing objects

Design Patterns

Category Patterns Use Case
Creational Singleton, Factory, Builder Object creation
Structural Adapter, Decorator, Proxy Object composition
Behavioral Observer, Strategy, Command Object interaction

Quick Reference

Pointer Operations (C/C++)

int x = 10;
int *ptr = &x;      // Pointer to x
int val = *ptr;     // Dereference: val = 10
int **pptr = &ptr;  // Pointer to pointer

Function Pointer (C)

int (*func_ptr)(int, int);  // Declaration
func_ptr = &add;            // Assignment
int result = func_ptr(3, 4); // Call