Nikolay Kostov's Blog

Overview of dictionaries, hash tables and sets. The video is recorded in 2013 in Bulgarian.

Topics covered:

• Dictionaries
• Hash Tables
• Hashing
• Collisions
• Dictionary<TKey, TValue> Class
• Sets: HashSet<T> and SortedSet<T>

Overview of trees and tree traversal algorithms. The video is recorded in 2013 in Bulgarian.

Topics covered:

• Tree-like Data Structures
• Trees and Related Terminology
• Implementing Trees
• Traversing Trees
  • DFS and BFS Traversals
• Balanced Search Trees
  • Balanced Trees in .NET

Overview of linear data structures such as lists, linked lists, stacks and queues. The video is recorded in 2015 in Bulgarian.

Topics covered:

• Lists
  • Static and Linked Implementation
  • List<T> and LinkedList<T>
• Stacks
  • Static and Linked Implementation
  • The Stack<T> Class
• Queues
  • Circular and Linked Implementation
  • The Queue<T> Class

Topics covered:

• SQL Profilers
• The N+1 Query Problem
• Incorrect Use of ToList()
• Incorrect use of SELECT *
• Deleting objects faster with native SQL

Overview of data structures and basic algorithms, computational complexity and asymptotic notation. Video recorded in 2015 in Bulgarian.

Topics covered:

• Data Structures Overview
  • Linear Structures, Trees, Hash Tables, Others
• Algorithms Overview
• Algorithms Complexity
  • Time and Memory Complexity
  • Mean, Average and Worst Case
  • Asymptotic Notation O(g)