LeetCode 169 – Majority Element | LeetCode Top Interview 150 | JavaScript | JDCodebase скачать в хорошем качестве

LeetCode 169 – Majority Element | LeetCode Top Interview 150 | JavaScript | JDCodebase

Welcome to the LeetCode Top Interview 150 series on JDCodebase! In this playlist, we solve every problem from the LeetCode study plan using clear PPT-based explanations, intuition, JavaScript code, test cases, and dry-run tables. Series Link: https://leetcode.com/studyplan/top-in... 📌 This Video Covers Problem: LeetCode 169 – Majority Element This is a must-know interview problem that helps you understand: How to identify a majority element using frequency logic Why the majority element is guaranteed to exist Different ways to approach the same problem Trade-offs between time complexity and space complexity How interviewers evaluate brute force vs optimal solutions 🧠 Problem Summary You are given an integer array nums The majority element appears more than ⌊n / 2⌋ times The majority element always exists You need to return the majority element value 🛠️ How We Solve It (Intuition + Approach) In this video, we explain the problem using three approaches for complete understanding: 🔹 Approach 1 – Brute Force Count occurrences of every element Return the element whose count exceeds n / 2 Easy to understand but very slow Not suitable for interviews 🔹 Approach 2 – Hash Map (Better Solution) Store frequency of each element using a map Return the element as soon as its count exceeds n / 2 Faster than brute force Uses extra memory 🔹 Approach 3 – Sorting Sort the array The majority element will always be at index ⌊n / 2⌋ Simple logic Slower than hash map due to sorting 🔧 Techniques Used Frequency Counting Hash Map Sorting Basic Array Traversal 📊 Complexity Analysis Brute Force Time Complexity: O(n²) Space Complexity: O(1) Hash Map Time Complexity: O(n) Space Complexity: O(n) Sorting Time Complexity: O(n log n) Space Complexity: O(1) / O(log n) 🔗 Important Links Problem Link: 👉 https://leetcode.com/problems/majorit... PPT Download (OneDrive): 👉 https://1drv.ms/p/c/d9a1d5f2dacf7aea/... Complete Playlist (JDCodebase – LeetCode Top Interview 150): 👉    • LeetCode Top Interview 150 – Full Explanat...   GitHub Source Code: 👉 https://github.com/jdcodebase/LeetCod... If this video helped you, please: 👍 Like 💬 Comment 🔔 Subscribe to JDCodebase #leetcode #leetcodesolutions #topinterviewquestions #javascript #arrays #hashmap #sorting #majorityelement #jdcodebase #leetcode169