Jishnu J P

software dev 💻 | Learning Data science from IIT Madras.

[Jishnu J P @Jishnu_J_P]

🚀 Day 61 of #100DaysOfCode
🎯 Solved: aximum Nesting Depth of the Parentheses
💡 Topics: string, stack
Just getting back with an easy question

[Jishnu J P @Jishnu_J_P]

🚀 Day 60 of #100DaysOfCode
🎯 Solved: Rotate Image
💡 Topics: matrix, math
Ended up being simpler than I expected.

[Jishnu J P @Jishnu_J_P]

🚀 Day 59 of #100DaysOfCode
🎯 Solved: Longest Consecutive Sequence
💡 Topics: Array , Hash tables

[Jishnu J P @Jishnu_J_P]

🚀 Day 58 of #100DaysOfCode
🎯 Solved: Reverse Words in a String
💡 Topics: Two pointers, string manipulation
Funny how you can stack multiple while loops and still stay O(n) 😄
Separating the cleanup from the core logic made everything click.

[Jishnu J P @Jishnu_J_P]

🚀 Day 57 of #100daysofcode
🎯 Solved: Set Matrix Zeroes
💡 Topics: Matrices
Space complexity actually mattered in this one - a rare sight. Always fun when the problem makes you squeeze logic into O(1).

[Jishnu J P @Jishnu_J_P]

🚀 Day 56 of #100daysofcode
🎯 solved: Sort Characters By Frequency
💡 topics: hashmap, string, sorting
⚡ learning: Use reserve() when you know the final size - no reallocations, faster builds.

[Jishnu J P @Jishnu_J_P]

🚀 Day 55 of #100daysofcode
🎯 solved: Remove duplicates
💡 topics: easy two pointers

later realized that I had solved it once, so this was just a revision.

[Jishnu J P @Jishnu_J_P]

🚀 Day 54 of #100daysofcode
Just showing up with an easy question.

[Jishnu J P @Jishnu_J_P]

🚀 Day 53 of #100daysofcode
🎯 solved: Reverse Integer
💡 topics: Maths

Check overflow before it occurs while building the reversed number - don’t rely on final bounds check.
#DSA #LearnInPublic

[Jishnu J P @Jishnu_J_P]

🚀 Day 52 of #100DaysOfCode
📌 Back after a long break.

Solved “Keep Multiplying Found Values”.
🔹 Built an unordered_set from vector → O(n) avg
🔹 Each existence check → O(1) avg
🔹 Loop + double until not found.

#DSA #LearnInPublic

[Jishnu J P @Jishnu_J_P]

💬 Hey working professionals!

We’re doing a quick 5-min survey for our IITM BS coursework on workplace communication.
Your insights = super valuable! 🙌

👉 https://t.co/kFB5vGNTUp

#Survey #Workplace #IITMBS #ProfessionalGrowth

[Jishnu J P @Jishnu_J_P]

🚀 Day 51 of #100daysofcode
🎯 solved: Merge Intervals
💡 topics: Array
#DSA #learninpublic

[Jishnu J P @Jishnu_J_P]

🚀 Day 50 of #100daysofcode
🎯 solved: Insert Interval
💡 topics: Array
Since a new array is to be returned, O(N) is the best we can do, binary search also wont help.
#DSA #learninpublic

[Jishnu J P @Jishnu_J_P]

🚀 Day 49 of #100daysofcode
🎯 solved: Minimum number of platforms required for a railway
💡 topics: Greedy, Two pointer
Total platforms = max trains at any time.
Sort arrivals & departures separately, use two pointers to simulate arrival & departure.
#DSA #learninpublic

[Jishnu J P @Jishnu_J_P]

🚀 Day 48 of #100daysofcode
🎯 solved: N meetings in one room
💡 topics: Greedy
The sooner a meeting ends, the more room there is for other meetings.
#DSA #learninpublic

[Jishnu J P @Jishnu_J_P]

🚀 Day 47 of #100daysofcode
🎯 solved: Minimum coins
💡 topics: DP, Greedy
#DSA #learninpublic

[Jishnu J P @Jishnu_J_P]

@SwetaSi53713188 All the best 👍

[Jishnu J P @Jishnu_J_P]

🚀 Day 46 of #100daysofcode
🎯 solved: Valid Parenthesis String
💡 topics: stack, Greedy
#DSA #learninpublic

[Jishnu J P @Jishnu_J_P]

🚀 Day 45 of #100daysofcode
🎯 solved: Lemonade Change
💡 topics: Array, Greedy
Not sure if I solved in the greedy way 😅
#DSA #learninpublic