Скачать или смотреть Brick Wall || Leetcode 554 || EASY APPROACH || COMPLETE EXPLANATION

🧱 Brick Wall | LeetCode #554 | HashMap Pattern Recognition
In this video, we solve LeetCode #554 - Brick Wall, a medium-level problem that teaches you how to find patterns using hash maps efficiently!

🎯 Problem Overview:
Given a rectangular brick wall represented as a 2D array where each row contains the widths of bricks in that row, draw a vertical line from top to bottom that crosses the fewest bricks. Return the minimum number of crossed bricks.

💡 What You'll Learn:
HashMap to track edge positions/gaps
Prefix sum for finding brick boundaries
Edge case handling (can't draw line at wall edges)

⏱️ Time Complexity: O(n) where n is total number of bricks
💾 Space Complexity: O(n) where w is wall width

🔑 Key Insight:
Instead of counting crossed bricks, count the maximum number of rows with the same width of bricks. crossed = total - equal sized

🔗 Useful Links:
LeetCode Problem: https://leetcode.com/problems/brick-w...
GitHub Code: https://github.com/jiteshpahwa04/Data...

📚 Related Problems:
Subarray Sum Equals K (LeetCode #560)
Top K Frequent Elements (LeetCode #347)
Group Anagrams (LeetCode #49)
Valid Sudoku (LeetCode #36)

🎨 Visual Explanation:
This problem is all about visualization - we'll use diagrams to understand why counting gaps is the winning strategy!

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💬 Did you think of a different approach? Share in the comments!
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