Heap-16 | 1337. The K Weakest Rows in a Matrix | 🔥 Beginner, Medium & Advanced Level

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Leetcode: https://leetcode.com/problems/the-k-weakest-rows-in-a-matrix/description/
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Notes: https://github.com/team-codebug/leetcode/blob/main/DSA_In_90Days/10_Heap/Heap_16_1337.%20The%20K%20Weakest%20Rows%20in%20a%20Matrix.svg

3 Months DSA for Placements! 🚀 Beginner to Advanced Playlist

🧠 Leetcode 1337 - The K Weakest Rows in a Matrix
In this video, we’ll solve a classic matrix + heap problem asked in interviews: "Find the k weakest rows in a matrix".

We’ll walk through 3 different approaches step-by-step:

✅ Approach 1: Sorting
Count soldiers in each row and sort based on strength.

✅ Approach 2: Binary Search
Use binary search to efficiently count soldiers (1s) in each row.

✅ Approach 3: Max Heap
Maintain a max-heap of size K to track the weakest rows while optimizing time and space.

You’ll learn:

How to model this as a counting + sorting problem

Efficiently reduce time complexity using binary search

Why a max-heap helps in limiting extra space while tracking K weakest rows

Coding and optimizing each approach in real-time

📌 Problem Link: https://leetcode.com/problems/the-k-weakest-rows-in-a-matrix/
📚 Part of our DSA playlist on Heaps, Binary Search & Matrices

#DSA #Leetcode1337 #Heaps #BinarySearch #Sorting #CodingInterview #JavaDSA #TopK #MatrixProblems #MaxHeap #LeetcodeSolutions #CodingWithCTOBhaiya #DataStructures #Algorithms
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Видео Heap-16 | 1337. The K Weakest Rows in a Matrix | 🔥 Beginner, Medium & Advanced Level канала CTO Bhaiya