DSA Problem Series : Topic: Reverse Kth Group using Queue Used Queue + Stack combo to reverse elements in fixed-size groups. Learned how both data structures balance order Mentors: @lovebabbar3 & Lakshay Kumar (@CodeHelp4U ) #DSA #Queue #Cplusplus #CodeHelp #ProblemSolving

DSA Problem Series — Day 49 🚀 Topic: Deque (Double Ended Queue) Learned how to perform insertion and deletion from both ends efficiently. Also explored its use in sliding window problems and palindrome checking. Mentors: @lovebabbar3 (@CodeHelp4U ) #DSA #Deque #Cplusplus

DSA Problem Series Topic: Queue (Creation of Queue) Learned FIFO logic, enqueue & dequeue ops using array. Mentors: @lovebabbar3 & Lakshay Kumar (@CodeHelp4U ) #DSA #Queue #Cplusplus #Coding #CodeHelp #letsconnect #learninpubic #buildinpublic

✅ Strings / Sliding Window Problem: Longest Substring Without Repetition Key Learnings : ♦ Track chars using hashmap ♦ Shrink window when duplicate found ♦ Each char processed once → O(n) Thanks ❤️ @lovebabbar3 (@CodeHelp4U ) #letsconnect #learninpublic

✅ Stack / Simulation Problem: Asteroid Collision Key Learnings ♦ Use stack to track right-moving asteroids ♦ Compare with top when left-moving appears ♦ Pop until collision resolved Thanks ❤️ @lovebabbar3 & Lakshay Kumar (@CodeHelp4U ) #100DaysOfCode #DSA #CodeHelp

✅ Stack / Greedy Problem: Remove K Digits Key Learnings ♦ Maintain an increasing stack ♦ Pop when current < top (greedy choice) ♦ Remove extra digits & trim leading zeros ♦ O(n) efficient solution Thanks ❤️ @lovebabbar3 (@CodeHelp4U ) #letsconnect #DSA #CodeHelp

Day 17 ✅ String problems: -> Rotate String -> Isomorphic Strings Key Learnings 🔸 Concatenation helps in rotation checks 🔸 Hash maps make pattern mapping easy Thanks ❤️ @lovebabbar3 & Lakshay Kumar (Code Help) #100DaysOfCode #Day17 #DSA #letsconnect #connect #learninpublic

Day 16 ✅ String problems: -> Longest Common Prefix ->Largest Odd Number in String Key Learnings 🔸 Sorting helps with prefix problems 🔸 Odd/even check simplifies string-number logic Thanks ❤️ @lovebabbar3 & Lakshay Kumar (Code Help) #100DaysOfCode #Day16 #DSA #letsconnect

Day 14 ✅ Binary Search problems: Split Array Largest Sum Median of Two Sorted Arrays Thanks ❤️ @lovebabbar3 & Lakshay Kumar (Code Help) #100DaysOfCode #Day14 #DSA #letsconnect #learninpublic #buildinpubic #CONNECT

Day 13✅ Binary Search problems: -> Kth Missing Positive Number -> Allocate Minimum Pages (minimize max pages per student) Thanks mentors ❤️ @lovebabbar3 & Lakshay Kumar (Code Help) #100DaysOfCode #Day13 #DSA #letsconnect #connect #buildinginpublic #LearnInPublic

Day 11✅ Binary Search problems: -> Find Peak Element (greater than neighbors) -> Koko Eating Bananas (min eating speed using binary search on answer) Thanks mentors ❤️ @lovebabbar3 & Lakshay Kumar #100DaysOfCode #Day11 #DSA #letsconnect #connection #LearnInPublic

Day 10 ✅ Binary Search problems: -> Minimum in Rotated Sorted Array ->Find how many times array rotated ->Single element in sorted array (others appear twice) Thanks mentors ❤️@lovebabbar3 & Lakshay Kumar (Code Help) #100DaysOfCode #Day10 #DSA #letsconnect #buildinpublic

Day 9 ✅ Binary Search problems: ->Ceil (smallest ≥ x) ->Floor (largest ≤ x) -> Search in Rotated Sorted Array I -> Search in Rotated Sorted Array II Thanks to mentors ❤️ @lovebabbar3 & Lakshay Kumar (Code Help) #100DaysOfCode #Day9 #DSA #letsconnect #buildinpublic

Day 8 ⚡ Started Binary Search problems: ->Search element x in a sorted array ->Find the index where an element should be inserted (Search Insert Position) ->Find the first element greater than or equal to x (Lower Bound) #100DaysOfCode #Day8 #DSA #BinarySearch #letsconnect

Great coders were once beginners who didn’t quit. 💻🔥 Every bug you fix is a step closer to mastery. Keep going. 🚀 #100DaysOfCode #CodingJourney #Motivation #letsconnect #buildInPublic

Day 7 – LeetCode Grind ⚡ 🔹 Majority Element (Boyer–Moore) 🔹 Majority Element II (extended Boyer–Moore) Lesson: The right algorithm can cut extra space & stay O(n) 🚀 #LeetCode #100DaysOfCode #DSA #ProblemSolving #CodingJourney #letsconnect #learninginpublic #buildinpublic

Day 6 – LeetCode Grind ⚡ 🃏 Max Points From Cards → Sliding window trick 🔁 Next Permutation → Find dip, swap, reverse suffix Pattern recognition is the real game 🚀 #LeetCode #100DaysOfCode #DSA #ProblemSolving #letsconnect #buildinpublic #LearnInPublic

Day 5 – LeetCode Grind 🔄 Revision day! Went back and re-solved: • Arrays (Find Duplicate, Sort Colors, Move Zeroes, Buy/Sell Stock) • Prefix sum problems • Two Sum, Three Sum, Four Sum • Container With Most Water, Pivot Index #LeetCode #100DaysOfCode #letsconnect

Day 3 – LeetCode Grind ⚡ Solved today: ➕ Two Sum ➕ Three Sum ➕ Four Sum Key takeaways: • Hash map for instant lookups in Two Sum • Sorting + two pointers for 3/4 Sum • Deduplication strategies to avoid repeated triplets/quadruplets #LeetCode #letsconnect #DSA #problem

Day 2 – LeetCode Grind ⚡ Solved: 💧 Container With Most Water 📍 Pivot Index ➕ Prefix sum based questions Key takeaways: Two-pointer optimization, prefix sum for O(n) solutions #LeetCode #100DaysOfCode #DSA #CodingJourney #ProblemSolving #letsconnect