Intersection of Two Arrays II | LeetCode 350 | Hash Map Solution #leetcode #coding #algomonster

Solve LeetCode 350: Intersection of Two Arrays II using a hash map (frequency counting) approach. This video walks through the problem step-by-step with visual animations.

🎯 Problem: Given two integer arrays, return an array of their intersection. Each element in the result must appear as many times as it shows in both arrays.

📊 Time Complexity: O(n + m)
💾 Space Complexity: O(n)

⏱️ Timestamps:
0:00 Problem Statement
0:15 Naive Approach (O(n×m))
0:25 Key Insight: Hash Map
0:40 Walkthrough: Build Frequency Map
1:30 Walkthrough: Find Intersection
2:20 Why It Works
2:35 Complexity Analysis

🔗 Related Problems:
- LeetCode 349: Intersection of Two Arrays
- LeetCode 1: Two Sum
- LeetCode 242: Valid Anagram

Find more at https://algo.monster/liteproblems

#LeetCode #LeetCode350 #Algorithm #HashTable #HashMap #CodingInterview #DataStructures #Programming #TechInterview #FAANG #ArrayProblems #FrequencyMap #AlgoMonster

Видео Intersection of Two Arrays II | LeetCode 350 | Hash Map Solution #leetcode #coding #algomonster канала AlgoMonster

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