Edit Distance | Dynamic Programming | LeetCode 72 | C++, Java, Python

[@alassanedialllo9598]

I am amazed by the clarity in which you teach. if you continue to upload such excellent contains there is no doubt for your success. You are amazing bro.

[@niteshbagla6045]

Really u taught better then my proffesional AD teacher, especially the delete, substitute and insert part..... now its easy to remember and didn't need to learn it,,, THANKS

[@KnowledgeCenter]

Thanks.

[@rajeshg1737]

The way you explain the solution is very clear. I watched till ~7 mins and I tried to code myself and got it right whereas I was initially wondering how to start.

[@KnowledgeCenter]

Great. Good job. I recommend this way to others as well.

[@crankyinmv]

Yup, this is the one which kept me from finishing the May challenge. Really liked your clear explanation. It's obvious at this point I was taking the wrong approach.

[@KnowledgeCenter]

Glad it was helpful!

[@saswatsahoo5038]

great explanation and hint! I watched upto 6:38 and was able to solve it...

[@KnowledgeCenter]

Glad it was helpful.

[@srijansaini6277]

Really your way of describing is amazing!!

[@KnowledgeCenter]

Thanks a lot 😊

[@ravinalawade6842]

nice explanation of recursive solution and then converting it into DP solution

[@KnowledgeCenter]

Thanks.

[@JardaniJovonovich192]

How did you get an idea to directly jump to last characters and then start comparing and then apply DP ? By reading the question itself did you understand that this is a DP problem ? How do we know that we have to follow DP approach to any problem ?

[@KnowledgeCenter]

Breaking the problem into smaller sub-problems should always be in your mind. For problems dealing with 2 strings, How would you reduce your problem size? Either from front or end. The goodness with end is that, we will need to keep track of just end, beginning is implicitly 0. That's how my approach is how to reduce the problem size. DP idea will automatically come, when you see that, the main function can be written in recursive form in terms of smaller subproblems. Then you should check if there are overlaps in the smaller problems. That's it. We need to avoid recomputing same things. For this problem specifically, experience of solving Longest Common Subsequence problem would help.

[@j8nya]

great!! but how to code explanation like horse->rorse (replace'h' with 'r')......can u help me to code🙏🙏🙏🙏

[@yangiiu4347]

Love your videos, follow you with LeetCode problems. BTW in python min(3, 5, 2...) is legal.

[@KnowledgeCenter]

Cool, thanks for the info. That would save some effort.

[@srikantsharma6430]

Nice explanation!

[@KnowledgeCenter]

Thanks!

[@ghumakkad_yogi]

Can you made video on Google kickstart challenges also?

[@KnowledgeCenter]

Sure. Will look into it. I was not aware of it.

[@manishpanwar2517]

Loved it

[@KnowledgeCenter]

Thanks.

[@varunagarwal28]

Awesome explanation

[@KnowledgeCenter]

Glad it was helpful!

[@DD-ko4dt]

Add to Everyday Checklist: Knowledge Center KZbin channel

[@KnowledgeCenter]

Thanks.