Convert Sorted Array to Binary Search Tree

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So, guys, to understand how it works you first need to learn how In order traversal works in the tree. Binary search algorithm, binary search tree and in order traversal are the closest relatives in trees and arrays.

giorgi

Used to work as hardware engineer, trying to become a back end programmer now. Been doing problems on leetcode in the last 2 weeks. every time when i search a problem on youtube, your video shows up. Thanks for spending the time to make these videos and posting them on youtube. It really helps!

kevindai

Thanks for sharing the solution! Your videos are very helpful

Could you please create videos explaining the recursion trace. It will help to visualize constructing the tree step-wise

gargipg

I have been asked the iterative version of the problem

rmadhavmca

kindly make a video explaining the recursive calls step by step....it will be extremely helpful!!

JamesHalpert

You're a legend thank you! Been checking out all your videos, real good explanations thank you!!!

pewdiepieschair

why mid = left + (right - left) /2.... so it will do (right - left)/2 first and then add left.. It doesn't make much sense...

leomonz

We missed as to why middle element is root, what makes middle element the root ? should have said two lines about that also to visualize how many ways can bst can reside in an array.

ankurbrdwj

great vid had the concept but needed some help with the implementation this is both easy to understand and runs great real quality code pants bro

Endlessvoidsutidos

Hi Kevin, are there any video as you said for recursion?

staythecoursenote

Why this takes o(n) time we are using divide and conquer so it should be logn and if this is o(n) because we are accessing all n elements so why it takes nlogn in merge sort

rohitbaisane

how come you can't do int mid = left + right / 2?

jumbogoe

How does it work in Java? I mean, left + (right - left) / 2 will not always yield a round int. For example, if left is 2 and right is 5, then 2+(5-2)/2 = 3.5. I assume Java will round/floor/ceil it internally? Well, you can't do arr[3.5] :)

idemchenko-js

Please make a video of recursion used for trees.

yahyashaikhworld

Hey Kevin how do we know its always going to be height-balanced!?

SR-wevl

int

Code returned wrong answer till I ADDED ceil

atulshrivastava

Sir, whats the time complexity for your solution ? O(n) ? Great video By the way !!!

ashishpawar

what's the space complexity here?

JJ-Bond

As a non cs degree graduate, where should I start learning DS and algorithms to crack these kinds of questions?

sidhantmanchanda

Hi Kevin ..Your code is not working in leetcode now. Can you please upload a video with modified version?

b.ravirao

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