LeetCode 446: Arithmetic Slices II - Subsequence | C# Solution | Dynamic Programming |

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📝 In this video, we'll solve the "Arithmetic Slices II - Subsequence" problem using C#. Learn how to count arithmetic subsequences using DP with dictionaries!

#leetcode #dynamicprogramming #subsequence #faangprep #codinginterview

🎯 Problem Difficulty: Hard
⏱️ Time Complexity: O(n²)
💾 Space Complexity: O(n²)

🔍 Key Concepts Covered:

Dynamic Programming
Dictionary Usage
Subsequence Counting
Long Arithmetic
C# Implementation

💡 We'll cover:

DP state design
Dictionary management
Arithmetic sequences
Overflow handling
Interview strategies

📚 Related LeetCode Problems:

Arithmetic Slices (LC-413)
Longest Arithmetic Subsequence (LC-1027)
Arithmetic Subarrays (LC-1630)
Number of Arithmetic Triplets (LC-2367)

#datastructures #algorithms #dp #subsequences
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🎓 Perfect for:

C# developers
DP mastery
Interview preparation
Hard problems

⭐️ Complete C# Solution:

☕ Support the Channel:

💻 Prerequisites:

Dynamic Programming
Dictionary operations
Subsequence concept

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#arithmeticsequences #subsequences #algorithmstudy

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💻 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.

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P.S. Don’t forget to check the video description for additional resources and related problems!
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