Edit Distance (LeetCode 72) | Full step by step solution with thought process | Dynamic Programming

Actual problem on LeetCode: leetcode.com/problems/edit-di...
Chapters:
00:00 - Intro
00:48 - Problem Statement and Description
03:23 - What are operations?
04:57 - Brute Force Won’t work
07:07 - Dynamic Programming with Memoization
19:12 - Dry-run of Code
21:13 - Final Thoughts
📚 Links to topics I talk about in the video:
LeetCode Problems: • Leetcode Solutions
Other String Problems: • Strings
Brute Force: • Brute Force algorithms...
Dynamic Programming: • Dynamic Programming ea...
📘 A text based explanation is available at: studyalgorithms.com
Code on Github: github.com/nikoo28/java-solut...
Test-cases on Github: github.com/nikoo28/java-solut...
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#leetcode #programming #interview

[@luminraja09]

I went through lot of solution videos. Yours is so easy to understand . Keep up the great work :)

[@juniorferreira1358]

Thank you very much! The information provided was easy to comprehend.

[@jamjam3448]

wowwww. Finallyyyy. I have understood this! Thanks a million!

[@ahmedtremo]

Great explanation, Thanks!

[@jatinkumar4410]

Amazing explanation 🙌

[@samridhshubham8109]

Absolutely perfect

[@NiteenChougula-fs9ij]

I've been searching for quality DSA lectures on KZbin, and I'm delighted to have found excellent your channel. I'm eager to watch your videos and deepen my understanding of DSA. Thank you for clear and quality video.

[@nikoo28]

Thank you so much Niteen for being a member and supporting my channel. It really motivates me to keep working hard and bringing out the best. Remember that as a member, you do get priority reply to comments and queries. :)

[@xxxmin0uxxx858]

nikil, thank you so much my brother , a big fan from algeria

[@nikoo28]

happy to have you

[@AyushSharma-tj1kp]

why did we compare string at i-1 and j-1 ??

[@KaPaTeJIb6a6o4ek]

It was great ! Thanks !

[@vyshakkriss7765]

I am new to dynamic programming! Good video! Keep making such videos. Although i did not understand it completely, I got a new idea on how to work on problems rather than going straight to brute force methods! Thanks

[@nikoo28]

What part did you face a problem with?? I can help

[@shaistakhan9048]

Thank you!!!!!! Love your Teaching style

[@deepakkumar13204]

Thank you bhaiya you are explain very well like striver ।। Are you preparing for any company..

[@aalialokhandwala8950]

can you tell me that while initialization of matrix, why are we traversing from the 1st index and not 0?

[@nikoo28]

the first row and column will all be zeroes

[@himajap2446]

Can someone let me know why do we initialize dp with length (m+1, n+1), why we have to consider empty char at begging of the appraoch?

[@nikoo28]

Because empty character is also a valid test case

[@nikoo28]

If you have an input like this str1 = “abcd” str2 = “” This is a perfectly valid test case and it’s answer will be 4.

[@SHADOW_736]

​@@nikoo28o

[@joyantamitra8186]

How do you know, you have to attack this problem in this way at the first glance?

[@nikoo28]

The more you practice, the more patterns you will start to observe. No shortcut my friend :)

[@sobitregmi31]

Can you please make video on word break and equal sum partition problem

[@nikoo28]

Those are in my list.

[@itjustworks4824]

u explained xactly how its to be done not just filling table

[@k.k.harjeeth5422]

Lucid !

[@RomanHaivaronski]

What is the complexity of this solution? Is it O(n) + O(n) + O(n^2)?

[@nikoo28]

I explain it at 20:56

[@shaistakhan9048]

waiting for more videos on strings