Lecture 23: Introduction to 2D Arrays in C++ || LeetCode Questions

In this Video, we are going to learn about 2D Arrays and solve the following questions:
- Row-wise Input/Column wise input
- Linear Search over 2D arrays
- Row-wise Sum/Column wise Sum
- Largest Row sum
- Wave Print
- Spiral Print
- Rotate a Matrix by 90 degrees
- Search in a 2D Matrix I LeetCode
- Search in a 2D Matrix II LeetCode

There is a lot to learn, Keep in mind “ Mnn boot karega k chor yrr apne se nahi yoga ya maza nahi para, Just ask 1 question “ Why I started ? “

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Stack Overflow Link: https://stackoverflow.com/questions/12813494/why-do-we-need-to-specify-the-column-size-when-passing-a-2d-array-as-a-parameter

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Course Flow: https://whimsical.com/dsa-4-placement-by-love-babbar-C7JX2fJ8hprv9ivEHkArjD@2Ux7TurymNF9zkFahVLk

Homework: timestamps added below

Notes Link: https://drive.google.com/file/d/1Vng3rgVFFnl0a5UbUhUO8YgxfClbcrgm/view?usp=sharing

Code Links: https://github.com/loveBabbar/CodeHelp-DSA-Busted-Series

Question Links:
- Wave Print: https://bit.ly/329Le3K
- Spiral Print: https://leetcode.com/problems/spiral-matrix/
- Rotate a Matrix by 90 degrees: https://leetcode.com/problems/rotate-image/
- Search in a 2D Matrix I LeetCode: https://leetcode.com/problems/search-a-2d-matrix/
- Search in a 2D Matrix II LeetCode: https://leetcode.com/problems/search-a-2d-matrix-ii/


Do provide you feedback in the comments, we are going to make it best collectively.

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Intro Sequence: We have bought all the required Licenses of the Audio, Video & Animation used.

Timestamps:

00:00 - Introduction
00:50 - Why we need 2-D Arrays ?
03:03 - How 2D stored in memory ?
04:22 - Promotion
05:26 - How 2D stored in memory ?
07:47 - Creating an 2D Array
09:51 - taking input in 2D Array
10:42 - Output in 2D Arrays
12:44 - Coding - Creating, Input & Output 2D Array
14:44 - Row-wise Input ion 2D Arrays
15:12 - Column-wise input in 2D Arrays
18:25 - Initialising 2D Arrays
20:45 - Linear Search in 2D Arrays
25:15 - Row-wise Sum Problem
32:22 - Largest Row Sum Problem
37:24 - Wave Print Problem
39:00 - Approach
41:00 - Code
45:22 - Time Complexity of Solution
46:20 - Spiral Print Problem
47:33 - Approach
50:45 - Code
59:17 - Time Complexity of Solution
01:00:35 - Homework
01:01:44 - Binary Search on 2D Arrays
01:02:44 - Search a 2D Matrix LeetCode Level1 Problem
01:03:55 - Approach
01:07:08 - Code
01:16:45 - Time Complexity of Solution
01:17:30 - Search a 2D Matrix LeetCode Level2 Problem
01:18:17 - Approach
01:23:29 - Code
01:28:10 - How to approach a problem ?


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