LeetCode 75: Sort Colors | C# Solution | Dutch National Flag Algorithm

📝 **Description**
Implement a simple sorting algorithm to sort an array of 0s, 1s, and 2s in a single pass - also known as the Dutch National Flag problem. #sortingalgorithm #dutchnationalflag #inplacesorting #c#

⏱️ **Complexity**
Time Complexity: O(n) - single pass through the array
Space Complexity: O(1) - constant extra space

## 📌 Timestamps
00:00 - Understanding problem statement
00:55 - Optimal solution using Counters
02:19 - Big O Notation explained
02:47 - C# solution walk-through
03:21 - C# solution analysis - runtime + memory

## 🔍 Key Concepts
- Dutch National Flag Algorithm
- In-place sorting
- Two-pointer technique
- One-pass algorithm

## 💡 Learning Points
- How to perform sorting in a single pass
- Managing multiple pointers efficiently
- In-place manipulation to achieve O(1) space complexity
- Applying partition logic for targeted sorting problems

## 🔗 Related Problems
- LeetCode 283: Move Zeroes
- LeetCode 215: Kth Largest Element in an Array
- LeetCode 905: Sort Array By Parity
- LeetCode 324: Wiggle Sort II

## 👥 Target Audience
This video is designed for intermediate-level programmers preparing for technical interviews, particularly those focusing on array manipulation and sorting algorithms.

## 📚 Prerequisites
- Basic understanding of arrays and loops in C#
- Familiarity with sorting concepts
- Knowledge of time and space complexity analysis

## 🔗 Links

## 💪 Additional Tips
- Remember that this problem requires exactly one pass through the array
- Pay special attention to the swap operations to avoid off-by-one errors
- The Dutch National Flag problem appears frequently in interviews under different variations

## 🙏 Call to Action
If you found this explanation helpful, please like and subscribe for more C# LeetCode solutions! Share your questions or optimization ideas in the comments below. What sorting problem should I cover next? #leetcodesolutions #codinginterviewprep #c#programming

[code-scribbler]

💻 Full Solution Code Available!
You can find the complete C# implementation for this problem on GitHub:

🔍 Got Questions?
If any part of the solution needs clarification or if you have alternative approaches, drop a comment below! I’ll be happy to discuss.

📢 Request Alert!
Want me to cover a specific LeetCode problem next? Let me know which one in the comments!
P.S. Don’t forget to check the video description for additional resources and related problems!
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