Rahul singh

Former TCS Engineer | Full-Stack Developer (MERN + Java) | #100DaysOfCode Challenge | Learning in Public | Building Projects | Open to Opportunities

[Rahul singh @rahuls25398]

@tanishq_writes Thanks bruhh

[Rahul singh @rahuls25398]

Day 100/100 of #100DaysOfCode!
Wrapped up this epic streak with some DP hard hitters 💪

🔥 Problems:
• Make Array Elements Equal to Zero
• Longest Valid Parentheses
• Word Break

The challenge ends, but the grind never stops ⚡
#LeetCode #CodeNewbie #KeepGrinding #DevLife #DP

[Rahul singh @rahuls25398]

@dibyendu2005 Thank you 😸

[Rahul singh @rahuls25398]

@qasimrokeeb Thanks bro

[Rahul singh @rahuls25398]

@VittoriaGrazie Tried my best to be consistent , it was hard at 1st then it became everyday habit😉

[Rahul singh @rahuls25398]

Day 99/100 of #100DaysOfCode 💻
#Leetcode kept crashing the entire evening 😩 but I still managed to submit today’s POTD — Number of Beams.
Wanted to do more greedy problems but hey, consistency won today 💪
Even when the system fails, don’t let your discipline fail.
#JS #DSA

[Rahul singh @rahuls25398]

Day 98/100 of #100DaysOfCode 💻
LeetCode POTD: Simple Bank System 💳

Just 2 days left — and it’s all about finishing strong.
Consistency > Motivation 🔥
#LeetCode #CodingChallenge #DevLife

[Rahul singh @rahuls25398]

Day 97/100 of #100DaysOfCode
Did two problems today 👇
🏦 Calculate Money in Leetcode Bank
🎭 Wildcard Matching (DP)

DP hits hard but the pattern payoff is worth it 😤
3 days to go — consistency > everything! 💪
#LeetCode #Coding #DevCommunity

[Rahul singh @rahuls25398]

Day 96/100 of #100DaysOfCode

🧩 LeetCode POTD: Next Greater Numerically Balanced Number — looks easy till it fries your brain 😂
🍃 Also dove into MongoDB — learning about collections, queries, and indexes.

4 days left! Every day of code is a step closer to mastery 🔥
#DSA

[Rahul singh @rahuls25398]

Day 94-95 of #100DaysOfCode
DSA problems I tackled:
⚡ Max Frequency After Ops II
🏃‍♂️ Jump Game
🔢 Check If Digits Are Equal

Jump Game had me jumping into confusion, not indexes 😂
And debugging felt like cardio for the brain 🧠💥

#DSA #coding #100DaysOfCode #developerlife

[Rahul singh @rahuls25398]

Day 93/100 of #100DaysOfCode 💥

Solved:
🔹 Maximum Frequency of Element After Operation 1
🔹 Merge Intervals

Festivals fade, but consistency shines brighter ✨
Keep coding. Keep growing. #DSA #CodingJourney #Consistency #DiwaliVibes

[Rahul singh @rahuls25398]

Day 92/100 of #100DaysOfCode – Diwali Edition!
While diyas lit the sky, I lit my logic 💻🎇
Solved:
🧩 Insert Interval
⚙️ Final Value of Variable After Performing Operations
A festive reminder — merge your efforts like intervals and keep incrementing your progress every day!
#DSA

[Rahul singh @rahuls25398]

💻✨ Diwali DSA Streak (Day 89–91) ✨
While diyas lit homes, I lit up my logic!
Solved:
• Unique Paths II
• Unique BSTs
• Lexicographically Smallest String
• Max Distinct Elements after Ops
Debugging is Diwali — remove darkness (bugs) & shine bright! 💫
#100DaysOfCode #DSA

[Rahul singh @rahuls25398]

Days 86–88 of #100DaysOfCode
Juggling GRE prep & coding wasn’t easy, but I still pushed 1–2 hrs daily 💻
Solved 3 LeetCode POTDs:
A.I.S.D
Smallest Missing Non-Negative Integer
Find Resultant Array
All were hard — but staying consistent matters more than perfection.
#Coding #DSA

[Rahul singh @rahuls25398]

Day 84-85 of #100DaysOfCode
Tackled 2 #LeetCode POTDs that stretched my logic muscles:
⚔️ Maximum Total D.with Spell Casting (DP - like House Robber)
🪄 Find Sum of Array Product of Magical Subsequences (Hard AF)
Didn’t do many, but went deep.
Pattern recognition > brute force

[Rahul singh @rahuls25398]

Day 81–83 of #100DaysOfCode 💻
✅ Successful Pairs of Spells & Potions (Binary Search)
✅ Median of Two Sorted Arrays (Brain melt 🔥)
✅ Search Insert Position (Classic)
✅ Convert Sorted Array to BST (Recursive Zen 🌲)
MongoDB NoSQL Certification done ✅
#DSA #CodingLife #WebDev

[Rahul singh @rahuls25398]

Day 79-80 of #100DaysOfCode ✅
Took on:
💧 Container With Most Water (Medium)
🌊 Trapping Rain Water (Hard)
Learned:
👉 Two-pointers can do magic
👉 Visualization > brute force
👉Staring at screen & suffering is also part of coding 😂
Water everywhere, but not a drop to debug 🚀

[Rahul singh @rahuls25398]

Day 76-78 of #100DaysOfCode:
Power cuts ⛈️Low battery 🔋Still coded ✅
Solved: Lemonade Change, Stock Buy/Sell, Triangles, Minimum Score Triangulation of Polygon, Find Triangular Sum of an Array & more.
👉 Lesson: Post later, code always.
#DSA #CodingJourney #LearningInPublic

[Rahul singh @rahuls25398]

Day 74–75 of #100DaysOfCode 🚀
✅ LeetCode QOTDs:
Valid Triangle Number → sort + two-pointers = clean solution
Largest Triangle Area → geometry + formula thinking 🔑
🐧 Explored core Linux commands & found a super-handy cheat sheet 📸
Consistency compounds. 💡

#DSA #Linux

[Rahul singh @rahuls25398]

Day 72-73 of #100DaysOfCode ✅
Solved:
• Implement Router
• Sticky Palindrome Number
• Fraction → Recurring Decimal
👉 Funniest DSA moment: solved Strictly Palindrome Number in 1 line → return false; 😂

And also missing days when i used to enjoy "Navratri"🥹
#DSA #Survivor