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

1/75. 1. Two Sum(Based on Hashmap)

How does HashMap works Internally in Java? Explained ✅

Can't let go of my toxic lover 🫶.That lover is "hashmap".

#Day3 of #100DaysOfCode .✅solved Two sum in O(n) time complexity using unordered_map AKA Hashmap . #DSA #leetcode #100DaysOfDiscipleship

🚀 Day 32 of #100DaysOfCode. 🔹 First Unique Character in a String (#387).→ Used HashMap to count frequency.🔹 Isomorphic Strings (#205).→ Two-way HashMap to ensure bijection. 🔗 GitHub: #LeetCode #Java #DSA #Coding

Day 47/100 of #100DaysOfCode .Solved leetCode+ GFG POTD .GFG--> used arrays as HashMap for finding the correct position of positive numbers . leetcode--> used set for storing unique elements.

🚀 Day 367 of Code 🚀. Solved :. ✅ 3487. Maximum Unique Subarray Sum After Deletion. Today’s problem required finding the maximum sum of a subarray with all unique elements, allowing at most one deletion. #Day367 #LeetCode #DSA #SlidingWindow #HashMap #ArrayProblems

🧵 Day 311 of #geekstreak2025.✅ GFG POTD: Count Unique Vowel Strings.🧠 Counted frequency of each vowel in the string,.then multiplied all frequencies × factorial of distinct vowels count. Used hashmap + frequency logic �� worked clean! . #dsa #hashmap #math #string #potd

今日の一題。767. Reorganize String. 隣接する文字がないように文字列を並び替える必要があるので、各文字の出現頻度順を持つhashMapを作り、.ヒープキューを作って頻度順に文字を繋げていきますが、前回の文字を使わないようにヒープからpop, pushという操作が必要。.

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:

Day 27 of #100DaysOfCode.✅ Solved LeetCode 904 (Fruit Into Baskets) using sliding window + hashmap. ✅ Learned WebSockets & built a simple Ping-Pong app for real-time communication. Progress every day! 🔥.#LeetCode #WebDev #JavaScript #NodeJS

How HashMap work in Java?.1. internal working - 2. get and put working -.3. core java courses - Best-10-advanced-core-java-courses-for-experienced-developers.html

🚀 Day 1 of POTD – A New Beginning!.📅 Started my GFG Problem of the Day challenge from today!.✅ Solved my first problem: Longest Substring with K Unique Characters.🧠 Learned the power of Sliding Window & HashMap combo. #Day1 #POTD #GeeksForGeeks #100DaysOfCode #DSAJourney

Week 2 | Day 3 ✅.Covered some 🔥 Java concepts today in my DSA Cohort:.Collection vs Collections.hashCode() & equals() working.HashSet & HashMap internals.toString() usage.Comparator vs Comparable.Array class vs Collections class. #DSA #Java

Master Sliding Window + HashMap to optimize string and array problems from O(n²) ➜ O(n) time!. #DSA #Algorithms #DataStructures #CodingInterview #JavaScript #TechTips #SEOhacks #Leetcode #DevTips

오늘은 기다렸던 주문 서비스의 카나리 배포일이었다. 우린 HashMap으로 이루어진 레거시 자바 코드, JSP, jQuery, 그리고 수천 줄에 달하는 MyBatis 쿼리 여러 개에 흩어진 로직을 모두 모아서 순수 도메인 모델을 만들어냈다. 모든 유즈케이스에 대해 믿음직한 테스트도 생겼다.

How hashmap looks at me whenever i am solving a dsa problem:

🚀 Just solved the Fruit Into Baskets 🍎🍌 problem on LeetCode!.Used HashMap + Sliding windows.Optimized for O(n) time and passed all test cases ✅.Clean, efficient, and satisfying! 💪 #LeetCode #Java #SlidingWindow #HashMap #100DaysOfCode