Jay Kumar Gupta

[Jay Kumar Gupta @jaykr31]

Night before exam...
Cyber security - paper tomorrow morning
Syllabus - 5 units
Covered - 1

[Jay Kumar Gupta @jaykr31]

Need peace✌️

[Jay Kumar Gupta @jaykr31]

@AmanSharma_554 Congrats bro...

[Jay Kumar Gupta @jaykr31]

75/75 – DSA Challenge ✅
solved -"Valid Number" Leetcode(Hard)
It’s done. 75 days of logic, frustration, growth & patience.
This challenge taught me that discipline > motivation.
Critical thinking isn’t built overnight — it’s earned problem by problem.
#Discipline #code #journey

[Jay Kumar Gupta @jaykr31]

@akhilesh2621 Can use a private insta account for storing photos and videos with no followers😅

[Jay Kumar Gupta @jaykr31]

Day 74/75: DSA Crunch Time!
2 days left! Revisiting Kadane’s, Prefix Sum, Two Pointers, Binary Search. Crushed _3Sum Closest_, _Bouquets with Adjacent Flowers_. Patterns > Problems! 💻📚 #DSA #CodingChallenge

[Jay Kumar Gupta @jaykr31]

@AlokDevJourney Thanks bruh😊

[Jay Kumar Gupta @jaykr31]

Day 73 of 75 Days DSA Challenge 💻

Solved Intersection of Two Arrays on LeetCode today. Slowly inching toward the finish line — every problem solved is one step closer to mastery.

#DSA #LeetCode #CodingJourney #75DaysChallenge

[Jay Kumar Gupta @jaykr31]

@SameerB24027 Sure

[Jay Kumar Gupta @jaykr31]

@akhilesh2621 Sure

[Jay Kumar Gupta @jaykr31]

@Muhamme30946080 Yup TYSM😊

[Jay Kumar Gupta @jaykr31]

Day 72/75 of my DSA Challenge 💻
Solved “Reverse Nodes in Pairs.”
Got stuck linking swapped pairs, fixed it using a dummy node + prev pointer ✅
Sometimes your logic’s right—just needs a tweak.
Debug, dry run, and enjoy the process!
#DSA #Coding #ProblemSolving

[Jay Kumar Gupta @jaykr31]

🧠 Day 70–71 of my #75DaysDSAChallenge
Solved 2 LeetCode problems today 💻
🔹 Money in the Leetcode Bank
🔹 3Sum Closest
Every problem strengthens logic & consistency. Nearing the finish line 💪
#LeetCode #DSA #Coding #ProblemSolving #MCA #100DaysOfCode

[Jay Kumar Gupta @jaykr31]

Day 68/75 DSA Challenge Complete! -

Solved LeetCode #12: Integer to Roman ✅

Used Greedy Approach: subtract largest Roman symbol repeatedly

Also learned Positional Approach: split number into thousands, hundreds, tens, ones

Complexity: O(1) time & space

1994 → MCMXCIV 💎

[Jay Kumar Gupta @jaykr31]

Day 14–29 of my #50DaysOfUpskillingChallenge: Networking deep-dive 🌐 Learned Internet basics, TCP/IP, HTTP, DNS, client-server & P2P, routers & switches, LAN/WAN/PAN, Bluetooth/Wi-Fi/SIM, TCP congestion, CDNs, VPNs. Foundation set for cloud! ☁️

[Jay Kumar Gupta @jaykr31]

Day 67/75 #DSAChallenge 🧩

Problem: Count subarrays with sum = goal (LeetCode 930)

✅ Brute-force: O(n²) → TLE
⚡ Optimized: Prefix sum + freq array → O(n)
Key takeaway: Prefix sums + hashmap = 💡 for subarray sum problems!

#LeetCode #DSA #Coding

[Jay Kumar Gupta @jaykr31]

Day 66/75 of #DSAChallenge ✅

Solved “Contains Duplicate II” on LeetCode: check if duplicates exist within k distance.
Used unordered_map to track last occurrence → O(n) solution!

#100DaysOfDSA #Coding #LeetCode #HashMap

[Jay Kumar Gupta @jaykr31]

@striver_79 Day 65/75 of #75DaysOfDSA 💻🔥
Solved “Maximum Points You Can Obtain from Cards” on #LeetCode
Pick k cards from either end to maximize points.
Trick? Find the min subarray sum of size (n−k) using a sliding window and subtract it from total 💡
10 days to go 💪
#DSA

[Jay Kumar Gupta @jaykr31]

🎆 Day 63 & 64/75 – #75DaysDSAChallenge
Happy Diwali everyone! 🪔 Kept the streak alive!

Solved 2 #LeetCode problems:
1️⃣ Next Greater Element I – find next greater in superset 🔍
2️⃣ Next Greater Element II – circular version using stack ♻️

Consistency > excuses 💪
#DSA #Diwali

[Jay Kumar Gupta @jaykr31]

Day 62/75 of my DSA Challenge 💪
Solved “Implement Queue using Two Stacks” on LeetCode today.
Loved how it flips the logic of stacks to simulate a queue — great exercise in understanding LIFO vs FIFO!

#DSA #LeetCode #75DaysChallenge #Coding #ProblemSolving