Uday

💻 Aspiring Full Stack Developer | Passionate about building modern web apps | BE CSE @ Chitkara Univ | Learning in public | #100DaysOfCode

[Uday @Uday246r]

Day 75

✅ Built a Student Management System using Node.js, Express, EJS & JS

Add, Edit, Delete Students ✏️

Filter by Marks (>, <) 🎯

Pagination 📄

Clean UI with styled actions 🚀

Also revised Sudoku Solver (LeetCode 37) 🔥

#NodeJS #ExpressJS #WebDev #Coding #Leetcode #Code

[Uday @Uday246r]

Day 74

Revised 46. Permutations → backtracking with recursion & swaps.

Revisited 60. Permutation Sequence → avoided TLE by using factorial number system to directly pick digits.
Focus: from brute force ➝ optimization ⚡
#LeetCode #DSA

[Uday @Uday246r]

Day 73:
Solved Subsets II on LeetCode
Learned how to generate the power set while handling duplicates using recursion + set.
Key idea ➝ backtracking with push_back / pop_back and using a set to avoid duplicate subsets.
#DailyCode #LeetCode #CPP #Backtracking

[Uday @Uday246r]

Day 72: Solved LeetCode 976 - Largest Perimeter Triangle 🛠️
Learned how triangle inequality works (a + b > c) and applied sorting to find the largest valid perimeter. #DailyCode #LeetCode #CPP

[Uday @Uday246r]

Day 71
✅ Revised recursion problems
✅ Learned about system calls in OS

Step by step, building consistency 🚀

#Coding #Recursion #OperatingSystem #DevJourney

[Uday @Uday246r]

Day 70 of Coding Journey
Solved LeetCode 611: Valid Triangle Number
🔹 Learned how to use Binary Search inside nested loops.
🔹 Time Complexity: O(n^2 log n)
🔹 Key takeaway: Sort + binary search makes counting valid triplets efficient.

#DailyCode #LeetCode #CPP #DSA

[Uday @Uday246r]

Day 69
Today I solved the Count Inversions problem using Merge Sort in Java.
🔹 Practiced divide & conquer
🔹 Learned how to track inversions efficiently
🔹 O(N log N) solution using modified merge sort
#Java #DSA #Coding

[Uday @Uday246r]

Day 68
Solved Permutation Sequence (LeetCode #60)
Learned how to use factorial math to directly compute the k-th permutation without generating all permutations! ⚡
#DailyCode #LeetCode #Java #DSA

[Uday @Uday246r]

Day 67 of DSA grind
Solved 3 problems today:
1️⃣ Rat in a Maze 🐀 - Backtracking path finder
2️⃣ Palindrome Partitioning 🔀 - Recursive partitions
3️⃣ Two Sum II ➕ - Two pointer technique

Each problem sharpened my recursion & pointer skills 💡
#DailyCode#DSA #LeetCode #Codin

[Uday @Uday246r]

Day 66

Solved LeetCode 3005: Count Elements With Maximum Frequency 🔥

👉 Learned how to use HashMap to store frequencies
👉 Found max frequency
👉 Counted total elements with that frequency

#Java #LeetCode #Coding

[Uday @Uday246r]

Day 65: 🚀 Coding progress!
✅ Rotated a matrix 90° clockwise
✅ Reversed a playlist array
Feeling more confident with array manipulations in Java! #DailyCode #Java #CodingJourney

[Uday @Uday246r]

Day 64:
Started with Next.js 🚀
Built simple pages for my e-commerce project:
✔ Products listing with “Add to Cart”
✔ Cart page with remove option
Loving how frontend + backend merge in one framework!
#DailyCode #Nextjs #WebDev

[Uday @Uday246r]

✅ Day 63

Day 63:
Solved Java problems today 👨‍💻
✔ Employee salary cross-check using HashMap
✔ Longest 0 sequence finder in binary array
Both boosted my DSA & logic skills 💡
#DailyCode #Java #DSA

[Uday @Uday246r]

@JobFound5 Interested

[Uday @Uday246r]

@nitesh_singh5 Interested

[Uday @Uday246r]

Day 62:
Solved LeetCode 1935 – Maximum Number of Words You Can Type
Learned how to:

Use sets for fast lookups

Split strings into words

Check word validity with simple loops

Another step forward in my problem-solving journey!

#LeetCode #100DaysOfCode #CodingJourney

[Uday @Uday246r]

Day 60 & 61
🚀 Successfully built & deployed our ISTE Student Chapter Club Website
🌐 Deployed Link: https://t.co/PPwhdRd79B

Grateful for the chance to develop & contribute
#WebDev #Coding #ISTE #ChitkaraUniversity

[Uday @Uday246r]

@Krishnasagrawal Resume

[Uday @Uday246r]

Day 60

✅ Solved the M-Coloring Problem (Graph Coloring) 🖍️ using backtracking.
👉 Learned how to check if adjacent vertices can have different colors & applied recursion to explore all possibilities.

#Coding #DSA #CPlusPlus #CodeNewbie

[Uday @Uday246r]

Day 59

Solved LeetCode 3227: Vowels Game in a String 🎯

Game theory problem 🧩

Alice & Bob take turns removing substrings with odd/even vowels

Key: Alice wins if the string has at least one vowel ✅

🔗 #LeetCode #Cplusplus #CodingJourney