Скачать или смотреть 🔐 Day -83 of My DSA Journey: Mastering Tree Serialization & High-Performance Transformations

Today’s session was a deep dive into the world of binary trees, focusing specifically on serialization/deserialization strategies—essential for data transport and reconstruction of trees. I also tackled modular matrix transformations in the LeetCode POTD and explored pattern generation logic in the GFG POTD.

✅ What I Solved Today:
🌲 Binary Tree Problems:
1. Serialize and Deserialize Binary Tree
🧠 Approach:
Used recursive pre-order traversal for serialization, converting tree nodes into a string with delimiters. During deserialization, I recursively reconstructed the binary tree by parsing the string.

📌 Key Learning:
Handling null nodes using # markers is crucial. Ensures precise structure retention when rebuilding the tree.

2. Serialize and Deserialize BST
🧠 Approach:
Leveraged BST properties for optimized serialization. Skipped nulls and directly inserted values using BST logic during deserialization.

📌 Key Learning:
Encoding BSTs is more space-efficient as the inherent order allows us to skip nulls and reconstruct based on value placement logic.

📌 LeetCode POTD:
Total Characters in String After Transformations II
🧠 Approach:
Simulated t transformations using a modular matrix exponentiation method. Captured character frequency transitions using a 26x26 matrix.

📌 Key Learning:

Efficient handling of large exponential operations using matrix power.

Modular arithmetic to avoid integer overflows.

Key use of dynamic matrix multiplication for character state transitions.

📌 GFG POTD:
Look and Say Pattern
🧠 Approach:
Generated the sequence iteratively using group-wise frequency counting. For each term, the count and value of digits were recorded to form the next string.

📌 Key Learning:

String traversal with intelligent grouping.

Essential foundation for recursive and pattern-generating logic.

🔍 Key Takeaways:
📚 Gained deeper insight into tree serialization and deserialization, an advanced concept for system design and data transmission.

💡 Understood the power of matrix exponentiation for fast and scalable transformations.

🔄 Improved string manipulation logic through pattern-based string construction.

👥 Let’s Connect!
If you’re working on DSA, prepping for FAANG interviews, or building your core CS fundamentals—drop your progress below or DM me. Let's keep each other motivated! 🚀

📌 Hashtags:
#DSA #100DaysOfCode #BinaryTrees #SerializeDeserialize #MatrixExponentiation #LookAndSay #ProblemSolving #CodingWithConsistency #LeetCode #GeeksforGeeks #SystemDesign #CodingDaily #TechPrep #Cplusplus #SoftwareEngineering #LinkedInCodingCommunity