[Java] Leetcode 6. ZigZag Conversion [Array #7]

In this video, I'm going to show you how to solve Leetcode 6. ZigZag Conversion which is related to Array.
In fact, I also have a whole section of solving leetcode questions and categorize them: kzbin.info...
Here’s a quick rundown of what you’re about to learn:
⭐️ Course Contents ⭐️
⌨️ (0:00) Question
⌨️ (1:25) Solution Explain
⌨️ (3:54) Code
In the end, you’ll have a really good understanding on how to solve Leetcode 6. ZigZag Conversion and questions that are similar to this Array.
Now, if you want to get good at Array, please checkout my Array playlist.
• Leetcode: Arrays
💻 Code: github.com/Eric-programming/C...

[@yalansun4382]

Very clear! Love the way you add comment/note of the code. thank you so much!

[@CostaKazistov]

Much prefer your solution than the one in top search results (Neetcode - he went with math approach). I couldn't come up with the math formula. Stringbuilder solution is easier to understand and code. Great explanation, btw! 👍

[@ArqamKarim]

Yes, I've been looking for a better solution for a while now and finally found this video.

[@raj_kundalia]

This is an amazing approach. Thank you!

[@vicente3j]

Great explanation!! I went ahead and referenced a lot of your code in my solution since I was very stuck. I will say it helps a lot to make your variable names something relevant, because I wasn't really sure what the 'n' or 'index' referred to in your solution. Thanks man :)

[@lambar0]

nice, simple and comprehensive

[@saurabhdayal11]

thanks you, your solution is very easy to understand

[@papaz.z853]

Very clear, thanks

[@shelcyshajithekkedathu9180]

Best Explanation!

[@MrRedloop]

very clear! thank you!

[@EricProgramming]

Thank you very much for your compliments I really appreciate it

[@flatsodaclub]

Hey, just curious, why in the 2nd for loop in the while statement do we set "j" to be "numRows - 2"? I am trying to wrap my head around that part, but the rest makes a lot of sense, thanks :)

[@khalilsleimi7832]

numRows is the number of rows, but we need our indices to be 0-based, thus the first -1, and the second -1 are because we're meaning to reference the item previous to the very last one. eg: (numRows -1) - 1 = lastRow -1 = theRowBeforeTheLast

[@sakkamouid3343]

I see in the video that you are talking about cycles and put as a goal identifying that cycle . But what if the string is not that string ? What if the string has no repeated characters , so that there is no cycles anymore?

[@papaz.z853]

you can understand cycle as pattern, there is always a pattern for zigzag, which is going down from the top and then going up from the bottom

[@jackyshi6876]

what is the reason for index++ in append

[@EricProgramming]

Thanks Danny!

[@ashwithchandra2622]

to start from where we left of like if we directly use i in place of index we again start from p so to oppose that we use index....

[@hmmgmm2841]

really fab . Hey behind you is there is a baby .

[@RohanKumar-zm6cx]

its not optimal soln as space complexity is not good

[@nikhilpoonia8191]

time complexity= 0(n square)???????? and whats the space complexity

[@VincentTubed]

funny to read these comments, not very well explained for my simple brain. Then again, is there any practical application for this?