🧠 LeetCode 13: Roman to Integer.Greedy + HashMap 💡.If prev ≥ curr → add.Else → subtract.⏱️ O(n) | 🔁 Single pass.#CodingChallenge

🔢 Day 75/100: Subarray Sum Equals K.✅ Used prefix sum + hashmap for O(n) efficiency.✅ Handled negative numbers with ease.✅ Counted all subarrays summing to target k.Hashing magic in action! 🪄✨.#100DaysOfCode #LeetCode #CPlusPlus #DSA #HashMap #CodingChallenge

✅Day 43 of #100DaysOfCode.Solved 2 LeetCode challenge today!.1. Convert Binary Number in a Linked List to Integer (POTD) .2. Baseball Game.#LeetCode #DSA #ProblemSolving #hashmap #vit #challenge #DrGVishwanathan #greedy #Stacks #algorithm #Arrays #linkedlist

Day 127 – LeetCode 229 ✅.🗳️ Majority Element II.Count frequency of each number.If freq > ⌊n/3⌋, include in result.🔁 Used hash map for counting.⚡ Simple & effective.#LeetCode #C++ #HashMap #MajorityElement

🧠 Day 74/100: LRU Cache.✅ Designed custom doubly linked list with HashMap.✅ O(1) get & put operations using pointers 🔁.✅ Handles eviction and insertion like a pro!.Perfect blend of logic & optimization 💡.#100DaysOfCode #LeetCode #CPlusPlus #LRUCache #SystemDesign #DSA

✅Day 42 of #100DaysOfCode.Solved 1 LeetCode challenge today!.1. Maximum Matching of Players With Trainers (POTD) .#LeetCode #DSA #ProblemSolving #hashmap #vit #challenge #DrGVishwanathan #greedy #sorting #algorithm #backtracking #Array

Day 42 ✅ of #100DaysOfCode.Solved Top K Frequent Elements.– First try: sort + hashmap — fast, wrong complexity.– Asked to do better → bucket sort (O(n)), no sort, no heap.– Looks slower, but ticks the “theory” box.Speed is a lie, interviews want proofs

Daily DSA 🚀 Streak-56.- Two sum (using hashmap). #100DaysOfCode #DSA #LeetCode .@ShradhaKhapra_ @ApnacollegeX

Day 126 – LeetCode 347 ✅.🔥 Top K Frequent Elements using Max Heap.Count frequency with map.Push into heap as {freq, num}.Pop top k → result.⚡ Runtime: 0 ms.#LeetCode #C++ #Heap #HashMap #100DaysOfCode

LeetCode 451 – Sort Characters by Frequency.Used HashMap to count & MaxHeap (PriorityQueue) to sort chars by freq 🔁.Loved how data structures fit together to solve this! 🔥.#LeetCode #PriorityQueue #HashMap #Java #DSA #TechTwitter #100DaysOfCode

#Day9 of grinding until I land a job! 🚀.- Solved 2 questions of HashMap, and Two Pointer Approach from NeetCode .- Brushed up on JavaScript concepts.- Completed about section of the updated Portfolio.Connect with me, let’s grow together! .#DSA #LeetCode #NeetCode #100DaysOfCode

🔥 Day 284 of DSA Series 🚀. Solved 1 LeetCode problem!. 1️⃣ Longest Palindrome 🔤❤️‍🔥.– Counted character frequencies and paired them optimally, allowing one odd center—classic and elegant frequency! 💡✅. #100DaysOfCode #LeetCode #DSA #String #HashMap #Greedy #CodingChallenge

Ever built your own hashmap in JavaScript? 🚀 Dive deep into hashing, collisions & instant lookups—then wire it up inside React. Because real devs love tinkering. 👉 Read more: #ReactJS #JavaScript #WebDev.

LeetCode Day 91. 3471. Find the Largest Almost Missing Integer. Used a sliding window with HashSet to get uniques in each subarray, and a HashMap to count how many subarrays each number appeared in. Returned the largest with count == 1. 🕒 O(n * k) | 💾 O(n).#LeetCode #Java

"Solved a problem on LeetCode using HashMap for the first time. Problem : 2SUM

Many Android developers ask me about the use cases of data structures and algorithms in Android. As we already know, ArrayList and HashMap are among the most frequently used, so I’m sharing some different examples:. - findViewById: Depth-First Search (DFS).- LRUCache: Doubly

HashSet in Java. A 𝐇𝐚𝐬𝐡𝐒𝐞𝐭 is a collection used to store unique elements with no guaranteed order. It is part of the java.util package and implements the Set interface, internally backed by a HashMap. 𝗞𝗲𝘆 𝗙𝗲𝗮𝘁𝘂𝗿𝗲𝘀 𝗼𝗳 𝗝𝗮𝘃𝗮 𝗛𝗮𝘀𝗵𝗦𝗲𝘁.🔹Uniqueness:

#Day10 of grinding until I land a job! 🚀.- Solved 2 questions of HashMap, and Two Pointer Approach(Hard) from NeetCode .Connect with me, let’s grow together! .#DSA #LeetCode #NeetCode #100DaysOfCode

LeetCode 1347 – Min Steps to Make Anagram.Used two HashMaps to compare char frequencies .It’s all about balancing what one string has vs. what the other needs ⚖️.#LeetCode #HashMap #Java #DSA #100DaysOfCode #CodingJourney #TechTwitter