#August_27_28_29_LeetCode_Grind

HashMaps (Python dict) Recap

A HashMap stores data in key–value pairs for super-fast access ⚡.
Think of it like a dictionary 📖: words = keys, meanings = values.

✅ Key Features:

Fast lookups, inserts, deletes → O(1) average

Keys are unique

Perfect for counting, mapping & caching

hashmap = {"apple": 2, "banana": 5}

print(hashmap["apple"])  # 2
hashmap["banana"] = 10   # update
hashmap["grape"] = 7     # insert
del hashmap["apple"]     # delete

🔥 Use Cases:
✔️ Word frequency counters
✔️ Caching results
✔️ Graph adjacency lists

@byte_philosopher

#August_30_LeetCode_Grid

📌 Graphs in DSA

A Graph = 🟢 Nodes (called vertices) + 🔗 Connections (called edges).
They’re everywhere — social networks, maps, recommendations, even computer networks!

Types of Graphs:

Directed vs Undirected ➡️ / ↔️

Weighted vs Unweighted ⚖️

Cyclic vs Acyclic 🔄 / 🚫

Ways to Store Graphs:

Adjacency List ✅ (efficient)

Adjacency Matrix 🔲 (easy but heavy)

Popular Graph Algorithms:

BFS (Breadth-First Search) 🔍 level by level

DFS (Depth-First Search) 🌊 go deep first

Dijkstra 🛣️ shortest path

Kruskal & Prim 🌐 minimum spanning tree

👉 Mastering graphs = mastering real-world problem solving.

@byte_philosopher

This is insane guys read it

Psalms 14:1
"The fool says in his heart, ‘There is no God.’"

2017 Reflections
2. I almost went insane...

https://telegra.ph/I-Almost-Went-Insane-08-31

Are you ready for tomorrow it's Monday plus sep 1?

@byte_philosopher

Happy Monday, have a productive week❤️

@byte_philosopher

#August_31_september_01_LeetCode_Grind

🚀 Dynamic Programming (DP) – The Brain of DSA 🧠

Dynamic Programming is one of the most powerful techniques in problem-solving. It’s all about breaking a complex problem into smaller overlapping subproblems, solving each subproblem once, and storing the results for reuse.

✨ Why DP matters?
Avoids repeated work ➝ makes algorithms efficient.

Solves problems that plain recursion or brute force cannot handle in time.

Forms the backbone of advanced algorithms in AI, bioinformatics, and optimization.

📌 Key Ideas in DP:
1. Overlapping Subproblems → Solve once, reuse results.

2. Optimal Substructure → The solution to a problem depends on solutions to smaller subproblems.

3. Memoization (Top-Down) → Store results of recursive calls.

4. Tabulation (Bottom-Up) → Build a table iteratively to reach the final answer.

⚡ Classic DP Problems:
Fibonacci Numbers 🔢
Longest Common Subsequence
Unique Paths in a Grid 🤖

Knapsack Problem 🎒

👉 Mastering DP = unlocking the ability to solve the toughest algorithmic problems efficiently.

💡 Remember: Think recursive, optimize with memory.

#DSA #DynamicProgramming #Coding
@byte_philosopher

🌿 August in BytePhilosopher 🌿

This month turned out better than I expected 🙌

✨ Stayed consistent for 20+ days on GitHub & LeetCode
✨ Finished the fundamentals of DSA (still a tough journey 😭)
✨ Started reading spiritual books for the first time
✨ Spent quality time with my family back home in Bahirdar
✨ Internship gave me the chance to meet many inspiring people

August wasn’t just a month — it was a season of personal & spiritual growth.

What I realized 👉 habit + consistency = real progress. Even though I failed in many goals, I’m grateful for every step forward. 💫

#Gratitude #Consistency #Growth
@byte_philosopher

Who is excited for this ? 🔥🔥🔥

@byte_philosopher

Hey you guys, I built a web app called Dotune to help you discover new artists and fresh tracks. It uses the Spotify API to access your saved songs and LastFM API to find similar tracks. Any new songs not already in your library are added to your recommendations, giving you fresh music to enjoy.

Sad news tho, Due to Spotify’s updated policy (as of May 15, 2025), the API now only supports Extended Quota mode for organizations, limiting individual accounts to 25 users in development mode. If you want to try it, fill out this form and get your playlist.

Access is first come, first serve, only the first 25 users will be able to have Dotune access their saved tracks and generate a playlist.

Have a productive week ahead guys🫶 this is our last monday of the year😉

እንዲሁም ለቅዱስ ሩፋኤል አመታዊ በዓል በሰላም አደረሳቹ❤

#Monday
@byte_philosopher

ግን ለምን ሴቶች ብዙ ሲለፉ ቆይተው ዶሮ ለመስራት ግን ወንዶች(አባወራዎች) ናቸዉ ትልቅ ክብር ተሰጧቸው የሚበሉት። ተገቢ ነው ወይ😁!!

🌼Anyways happy new year eve 🌼

@byte_philosopher

🌸2017 in Bytephilosopher🌸

I can say alot of things about this year from finding amazing people's to do what I planned so far.but all in all is this year I got myself, I understanded whom I am and what I belong.

What I can say is "እግዚአብሔር በብዙ ባርኮኛል". What i failed and achieved all made me here today and I am so grateful for that.

For 2018 may it be the best for all of us. And help us to learn, grow and succeed in our journey.

🌼Again Happy new year ቤተሰብ 🌼

@byte_philosopher