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C#C# courseLearn C# from first programs through modern runtime features, concurrency, architecture, EF Core, secure ASP.NET Core APIs, testing, and deployment.C++C++ courseLearn modern C++ through containers, ownership, classes, algorithms, testing, and a practical command-line project.PyPython courseLearn modern Python through data modeling, collections, files, type hints, testing, environments, and a practical command-line project.

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C# tutorial

1How C# Programs Work
2C# Variables and Data Types
3C# Numbers and Operators
4C# Strings and Text
5C# Input, Conversion, and Validation
6C# Boolean Logic and Conditions
7C# Loops
8Debugging C# Programs
9C# Methods, Parameters, and Return Values
10C# Scope and How Values Move
11C# Arrays and Lists
12C# Dictionaries and Sets
13C# Null and Nullable Values
14C# Classes and Objects
15C# Constructors, Properties, and Encapsulation
16C# Enums, Records, Structs, and Classes
17C# Interfaces, Composition, and Inheritance
18C# Exceptions and Resource Cleanup
19C# Generics
20C# Delegates and Lambda Expressions
21C# LINQ
22C# Files and Directories
23C# Async and Await
24Organizing a C# Project
25C# Beginner Capstone: Build a Study Tracker
26Advanced C# Pattern Matching
27Span, Memory, and Buffer Pooling
28Advanced Generics and Constraints
29Reflection, Attributes, and Metadata
30Expression Trees and Query Translation
31Tasks, Cancellation, and Timeouts
32Parallelism and Thread Safety
33Channels and Producer-Consumer Pipelines
34Memory, Allocation, and GC Performance
35Benchmarking and Profiling .NET Code
36Dependency Injection, Configuration, and Logging
37HttpClient and Resilient Outbound Calls
38Serialization Contracts and Versioning
39EF Core Data Access and Transactions
40Application Architecture and Domain Boundaries
41ASP.NET Core APIs and Endpoint Design
42Middleware, Authentication, and API Security
43ASP.NET Core Integration Testing
44Observability, Health Checks, and Deployment
45C# Advanced Capstone: Ship a Production API

C++ course

1How C++ Programs Work
2C++ Variables and Fundamental Types
3C++ Operators, Arithmetic, and Conversions
4C++ Strings, Input, and Output
5C++ Conditions and Boolean Logic
6C++ Loops and Repetition
7C++ Functions, Parameters, and Return Values
8Debugging C++ and Undefined Behavior
9C++ Arrays and Vectors
10C++ Iterators and Standard Algorithms
11C++ References, Pointers, and Const
12C++ RAII, Ownership, and Smart Pointers
13C++ Structs, Classes, and Objects
14C++ Constructors and Encapsulation
15C++ Composition and Runtime Polymorphism
16C++ Function and Class Templates
17C++ Error Handling and Exceptions
18C++ Files and Stream I/O
19C++ Projects, CMake, and Testing
20C++ Capstone: Build a Task Tracker

Python course

1How Python Programs Run
2Python Variables and Core Types
3Numbers, Operators, and Conversions
4Strings, Input, and Output
5Decisions with if, elif, and match
6Loops and Iteration
7Functions and Data Flow
8Debugging Python with Evidence
9Lists, Tuples, and Sequence Design
10Dictionaries and Sets
11Comprehensions and Generators
12Modules, Imports, and Packages
13Files, pathlib, and JSON
14Exceptions and Validation
15Classes and Dataclasses
16Iterators and Context Managers
17Type Hints and Static Analysis
18Testing Python with pytest
19Virtual Environments and Dependencies
20Python Capstone: Build an Expense Tracker

Coding problems (100)

1FizzBuzz
2Fibonacci sequence
3Calculate a factorial
4Palindrome checker
5Prime number test
6Reverse a string
7Anagram checker
8Find the largest array value
9Binary search
10Bubble sort
11Determine whether a number is even or odd
12Sum all values in an array
13Count vowels in a string
14Sum the digits of an integer
15Print a multiplication table
16Leap year checker
17Greatest common divisor
18Convert decimal to binary
19Linear search
20Find the second-largest distinct value
21Selection sort
22Insertion sort
23Convert Celsius to Fahrenheit
24Count character occurrences
25Remove whitespace from a string
26Two Sum
27Balanced brackets
28Merge two sorted arrays
29Remove duplicate values
30Word frequency counter
31Find the missing number
32Tower of Hanoi
33Reverse a linked list
34Shortest path with breadth-first search
35Minimum coin change
36Rotate an array to the right
37Transpose a matrix
38Run-length encode a string
39First non-repeating character
40Longest substring without repeating characters
41Maximum subarray sum
42Merge overlapping intervals
43Group anagrams
44Detect a linked-list cycle
45Calculate binary-tree height
46Inorder binary-tree traversal
47Flood fill a grid
48Generate all string permutations
49Calculate edit distance
500/1 knapsack
51Find the smallest array value
52Calculate an array average
53Count positive, negative, and zero values
54Swap two values
55Raise an integer to a power
56Reverse the digits of an integer
57Count words in a sentence
58Convert words to title case
59Remove duplicate characters
60Find the longest word
61Find distinct common array values
62Detect a duplicate array value
63Move zeroes to the end
64Rotate a string left
65Validate basic password rules
66Convert a Roman numeral to an integer
67Find the number of days in a month
68Calculate a grade average
69Calculate distance between two points
70Sum multiples below a limit
71Calculate a triangular number
72List all divisors of a number
73Check for a perfect number
74Count set bits in an integer
75Format a ten-digit phone number
76Quicksort an array
77Merge sort an array
78Heap sort an array
79Topologically sort a directed graph
80Find a weighted shortest path with Dijkstra
81Track connectivity with union-find
82Find a BST's lowest common ancestor
83Traverse a binary tree level by level
84Validate a binary search tree
85Serialize a binary tree
86Search prefixes with a trie
87Build a least-recently-used cache
88Evaluate a postfix expression
89Find every sliding-window maximum
90Build products except self
91Find the kth-largest array element
92Find the longest common subsequence length
93Find the longest increasing subsequence length
94Split a string into dictionary words
95Find a subset with a target sum
96Generate balanced parentheses
97Find combinations for a target sum
98Count islands in a grid
99Traverse a matrix in spiral order
100Rotate a square matrix 90 degrees

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