Ayush Kumar Rai

Ayush Kumar Rai
Full Stack Web Developer | AIML

[Ayush Kumar Rai @ayush_kumarrai]

Building in tech, learning every day, and documenting the journey.

I’m Ayush Kumar Rai and I am getting back on the track.

From writing code to building discipline outside the screen.

More to come 🚀
#AyushKumarRai #OffCodeVibes #TechJourney #DeveloperLife #BuildingInPublic

[Ayush Kumar Rai @ayush_kumarrai]

Back on LeetCode after a 2–3 month break — solved today’s Problem of the Day in one go.

I’m Ayush Kumar Rai, a Full Stack Web Developer and AIML student, getting back on track with DSA step by step.
Momentum matters more than streaks.
#AyushKumarRai #LeetCode #DSA

[Ayush Kumar Rai @ayush_kumarrai]

Getting on track after a long break?
Whats going on in the technology guys?
#WebDev

[Ayush Kumar Rai @ayush_kumarrai]

Was so fun solving House Robber III

[Ayush Kumar Rai @ayush_kumarrai]

Just solved this Reverse Polish Notation (RPN) problem on LeetCode as part of X and Threads grind! 🧠🔥 It was all about using a stack to evaluate postfix expressions, and I got it accepted with 6ms runtime, beating over 72% 🚀.

[Ayush Kumar Rai @ayush_kumarrai]

Solved a really good sliding window problem today — it was the LeetCode Problem of the Day and coincidentally the same one I faced in a previous online assessment! 🔥 Super interesting logic and a neat reminder of how powerful the sliding window technique can be.

[Ayush Kumar Rai @ayush_kumarrai]

@JulianWloch 🤣What about Bob?

[Ayush Kumar Rai @ayush_kumarrai]

Knocked out the Daily Coding Challenge for June on LeetCode! Consistency > everything, and this badge just hits different. 🔥👨‍💻 #LeetCode #DCC #CodingJourney #100DaysOfCode #DevLife

[Ayush Kumar Rai @ayush_kumarrai]

Tried solving Dijkstra’s algorithm 2-3 times with a basic approach but kept hitting TLE 😤. Finally optimized it using an adjacency list + priority queue, and boom — passed all test cases like a charm ✅🔥

[Ayush Kumar Rai @ayush_kumarrai]

Just casually solved the classic “Sort Characters by Frequency” LeetCode question—and bruh, it ran perfectly in one go 😭🔥! Used a Priority Queue, trusted the process, and boom—ACCEPTED! Moments like these really hit different 😌.
#ayushkumarrai

[Ayush Kumar Rai @ayush_kumarrai]

@Pratikshak19332 Thanks ☺️

[Ayush Kumar Rai @ayush_kumarrai]

Solved today’s LeetCode Daily Challenge using a BFS-based approach where I generated all possible subsequences in lexicographical order and checked if they appear at least **k** times in the original string. Used a helper function to verify each candidate subsequence.

[Ayush Kumar Rai @ayush_kumarrai]

Learning Priority Queue and randomly gave a tukka solution to this one—and it actually worked 😭🔥. Still trying to wrap my head around how that went right, but hey, W is a W! #LeetCode #PriorityQueue #LearningOnTheGo #CodeLuck

[Ayush Kumar Rai @ayush_kumarrai]

Solved today’s LeetCode Daily in Java 💻 — although I could’ve used a PriorityQueue, I went for a cleaner approach using dual sorting with index mapping. Just sorted by value to get top k, then re-sorted those k by index to maintain order. Result? 7ms runtime, beating 83.2% 🚀🔥

[Ayush Kumar Rai @ayush_kumarrai]

Tried solving Leetcode 2311 using DP at first, but it got messy and inefficient real quick. Switched to a greedy approach instead — counted zeros and added 1s from the end only if the binary value stayed ≤ k. Way faster and cleaner. Final solution passed all test cases in 4ms

[Ayush Kumar Rai @ayush_kumarrai]

Just solved today’s LeetCode POTD with a simple brute-force approach (O(n²)) since it was an easy one 💻✅. Didn’t overcomplicate—sometimes going basic does the job perfectly! 🔥
#LeetCode #POTD #Java #Ayushkumarrai

[Ayush Kumar Rai @ayush_kumarrai]

Today's LeetCode POTD was about dividing a string into groups of size k and filling the last group with a given character if it falls short.
#LeetCode #POTD #JavaCoding #StringManipulation #DSA

[Ayush Kumar Rai @ayush_kumarrai]

Today's POTD was pretty easy to crack! Just had to sort the array and group elements such that the difference between the max and min in each group doesn’t exceed k. A simple greedy approach did the trick! ✅ #LeetCode #POTD #Java #CodingRoutine

[Ayush Kumar Rai @ayush_kumarrai]

Took a break from my learning phase due to a distraction that honestly messed with my head for a while. But now that the distraction is out, I’m getting back on track. I’ve lost a lot in the process—confidence, focus, even a bit of myself. But I also gained some perspective.

[Ayush Kumar Rai @ayush_kumarrai]

Now, I would not get my 365 Days LeetCode Badge… just because I couldn’t solve one problem on the day of my exam 😔
Pain. But we move.
It's not about the badge, it's about the habit🍄
#100DaysOfCode #LeetCode #DevJourney #ayushkumarrai