Count Submatrices with Top-Left Element and Sum Less Than k | Brute Force | Optimal | Leetcode 3070

Whatsapp Community Link : https://www.whatsapp.com/channel/0029Va6kVSjICVfiVdsHgi1A

Hi Everyone, this is the 174th video of our Playlist "Arrays 1D-2D : Popular Interview Problems" by codestorywithMIK.
Today we will be solving a good visualization problem based on 2D-Arrays : Count Submatrices with Top-Left Element and Sum Less Than k | Brute Force | Optimal | Leetcode 3070 | codestorywithMIK
Problem Name : Count Submatrices with Top-Left Element and Sum Less Than k | Brute Force | Optimal | Leetcode 3070 | codestorywithMIK
Company Tags : Will update later
My solutions on Github(C++ & JAVA) : https://github.com/MAZHARMIK/Interview_DS_Algo/blob/master/Arrays/2-D%20Array/Count%20Submatrices%20With%20Equal%20Frequency%20of%20X%20and%20Y.cpp
Leetcode Link : https://leetcode.com/problems/count-submatrices-with-equal-frequency-of-x-and-y
My DP Concepts Playlist : https://youtu.be/7eLMOE1jnls
My Graph Concepts Playlist : https://youtu.be/5JGiZnr6B5w
My Segment Tree Concepts Playlist : https://www.youtube.com/watch?v=k99r1A7krcY&list=PLpIkg8OmuX-K1qUIQToCllUO0UIKXt8dB
My Recursion Concepts Playlist : https://www.youtube.com/watch?v=pfb1Zduesi8&list=PLpIkg8OmuX-IBcXsfITH5ql0Lqci1MYPM
Trie Playlist - https://www.youtube.com/watch?v=DMP2bqW6URA&list=PLpIkg8OmuX-I99uuP2BZOz4mI_lms4gVG
Difference Array Technique: Concepts & Qns : https://www.youtube.com/watch?v=ZHNVmtm08WY&list=PLpIkg8OmuX-Kqkb8DqDe_4-Tiav6ilS_L
My Line Sweep Technique Playlist : https://www.youtube.com/watch?v=-FxkJiCyg5g&list=PLpIkg8OmuX-IOG_-Bv92l-EhuBQX28LOm
Small Dopamine Java Videos - https://www.youtube.com/playlist?list=PLpIkg8OmuX-KxhK6iSmDZeisqw3PEOEU5
My GitHub Repo for interview preparation : https://github.com/MAZHARMIK/Interview_DS_Algo
Instagram : https://www.instagram.com/codestorywithmik/
Facebook : https://www.facebook.com/people/codestorywithmik/100090524295846/
Twitter : https://twitter.com/CSwithMIK
Subscribe to my channel : https://www.youtube.com/@codestorywithMIK

╔═╦╗╔╦╗╔═╦═╦╦╦╦╗╔═╗
║╚╣║║║╚╣╚╣╔╣╔╣║╚╣═╣
╠╗║╚╝║║╠╗║╚╣║║║║║═╣
╚═╩══╩═╩═╩═╩╝╚╩═╩═╝
Video Summary :
The brute-force approach fixes each bottom-right corner and recomputes the entire submatrix sum from scratch, which is simple but very slow.
The optimized approach builds a running 2D prefix sum so each cell already stores the sum from (0,0) to that point.
This avoids repeated work and lets you check each submatrix in constant time.
Since sums only grow as you move right, you can even break early in each row to save extra computation.
✨ Timelines✨
00:00 Introduction
00:08 Motivation
00:40 Problem Explanation
02:21 Thought Process - Brute Force
08:31 Optimisation
20:40 Dry Run
23:20 Story To Code
25:58 Coding Optimal Approach

#MIK #mik #Mik
#coding #helpajobseeker #easyrecipes #leetcode #leetcodequestionandanswers #leetcodesolution #leetcodedailychallenge #leetcodequestions #leetcodechallenge #hindi #india #coding #helpajobseeker #easyrecipes #leetcode #leetcodequestionandanswers #leetcodesolution #leetcodedailychallenge #leetcodequestions #leetcodechallenge #hindi #india #hindiexplanation #hindiexplained #easyexplaination #interview#interviewtips #interviewpreparation #interview_ds_algo #hinglish #github #design #data #google #video #instagram #facebook #leetcode #computerscience #leetcodesolutions #leetcodequestionandanswers #code #learning #dsalgo #dsa #coding #programming #100daysofcode #developers #techjobs #datastructures #algorithms #webdevelopment #softwareengineering #computerscience #pythoncoding #codinglife #coderlife #javascript #datascience #leetcode #leetcodesolutions #leetcodedailychallenge #codinginterview #interviewprep #technicalinterview #interviewtips #interviewquestions #codingchallenges #interviewready #dsa #hindi #india #hindicoding #hindiprogramming #hindiexplanation #hindidevelopers #hinditech #hindilearning #helpajobseeker #jobseekers #jobsearchtips #careergoals #careerdevelopment #jobhunt #jobinterview #github #designthinking #learningtogether #growthmindset #digitalcontent #techcontent #socialmediagrowth #contentcreation #instagramreels #videomarketing #codestorywithmik #codestorywithmick #codestorywithmikc #codestorywitmik #codestorywthmik #codstorywithmik #codestorywihmik #codestorywithmiik #codeistorywithmik #codestorywithmk #codestorywitmick #codestorymik #codestorwithmik

Видео Count Submatrices with Top-Left Element and Sum Less Than k | Brute Force | Optimal | Leetcode 3070 канала codestorywithMIK