Ajeet Kumar Upadhyay @ajeetkrup401

Frontend Developer | React.js & Next.js Expert | Building Scalable Web Applications | AWS & Microservices | 2+ Years Experience portfolio-1xw6.vercel.app Jharkhand, India Joined January 2024

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Ajeet Kumar Upadhyay @ajeetkrup401

3 hours ago

Day 3🔥🔥🔥 #DSA #LeetCode #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

a day ago

Day 2 - Cracked “Minimum Operations to Make the Integer Zero” 🎯 Key insight: play with num1 - k*num2, then check bitcount(x) ≤ k ≤ x. Debugged JS bitCount (32-bit bug!) & got the right answer 💡 #LeetCode #JS #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

2 days ago

Day 1 #LeetCode #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

5 days ago

Solved Cheapest Flights Within K Stops on LeetCode! 🚀 Runtime: 18ms (Top 20%), Memory: 62MB (Top 15%) 🏆 Graph + BFS approach nailed it. #LeetCode #JavaScript #Coding #DSA #100daysofcoding

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Ajeet Kumar Upadhyay @ajeetkrup401

2 weeks ago

Successfully solved Bellman-Ford Algorithm #LeetCode #DSA #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

2 weeks ago

Optimized Network Delay Times from 302ms to 138ms #DSA #LeetCode #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

2 weeks ago

It's 3:42 AM, grinding 🔥🔥🔥 Solved network delay time with Dijkstra #DSA #LeetCode #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

2 weeks ago

Cracked Dijkstra 🚀 Built it from scratch with a custom MinHeap 💻 Debugged bubbleDown bug (forgot .dist) & now shortest paths work like charm! 🏆 Graphs feel less scary now 😎 #100DaysOfCode #DSA #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

2 weeks ago

Minheap simulation causing TLE in Dijkstra's algorithm, needs optimization. #DSA #algorithm #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

🔥 Just crushed the Connected Components problem using Disjoint Set Union! ✨ Path compression + Union by rank = O(α(n)) magic 🚀 From confused to confident in graph algorithms Who else loves that moment when DSU just clicks? #DSA #Algorithms #LeetCode

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

🎓 Solved course schedule with Kahn's topological sort! ✅ Find courses w/ no prereqs ✅ Take them & remove dependencies ✅ Repeat until done! Algorithm handles the planning! 🚀 #LeetCode #DSA #100DayChallenge

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

🎉 Woohoo! Just cracked topological sorting with Kahn's algorithm! The secret sauce: Find nodes with no dependencies Remove them & update neighbors Repeat until done Perfect for course scheduling & build systems! 🚀 #DSA #Algorithms #100DayChallenge

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

Cracked Course Completion 🎉 If cycle exists ➝ no course can be finished 🔁 Else ➝ all courses possible ✅ Cycle detection in DAG = key 🔑 #DSA #Graph #TopologicalSort #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

🔥 Some sweat, some bit magic! Learned BFS + Bitmask trick & cracked Shortest Path Visiting All Nodes 🚀 From brute confusion ➡️ elegant state tracking. Feels good! 💡 #LeetCode #DSA #BFS #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

Hehe cracked the classic Number of Islands 🌊🏝️ with DFS — just a matter of understanding the game. Grid = graph, islands = connected components. Once that clicked, everything else fell in place! #DSA #100DaysOfCode #algorithms #graphs

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

🎉 Wohoo gotcha! Just crushed the backend for my expense tracker - APIs, auth, database(dummy) all working! Now diving into Angular frontend. From zero to full-stack dev mode activated! 💻✨ #FullStackLife #Angular #ExpenseTracker #CodingJourney

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

Cracked Inorder Traversal w/o recursion! 🚀 Used a stack to mimic recursion: push left till null, pop & visit, then go right. Clean & iterative — no call stack needed 🌳 #DSA #BinaryTree #100DaysOfCode

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

Just planted a new node in a BST 🌱➡️🌳 Using recursion, navigate left if smaller, right if bigger, and insert when null. Elegant & simple — tree stays BST-perfect after each insert! #DSA #BinaryTree #100daysofcoding

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

Check out my latest article: Bundle Splitting Strategies - Making Your Web Apps Lightning Fast linkedin.com/pulse/bundle-s… via @LinkedIn

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Ajeet Kumar Upadhyay @ajeetkrup401

3 weeks ago

Leveled up my BFS skills! 🚀 Just nailed LeetCode 199 - Binary Tree Right Side View 🌳👀 Capturing the last node at each level was the key. #LeetCode #JavaScript #100DaysOfCode #DSA #100DaysOfCode