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A lot of people want to improve their problem solving,
I found a pretty interesting question to help you solve it. It’s a straightforward question in terms of formulation. Discovering what to do is not hard but actually figuring out how to achieve the end result can be tricky. Use this question to sharpen your skills.
This problem can be found as problem 897. Increasing Order Search Tree
For my Python people, there is a way to do this using ‘yield’ which might give slightly better performance, but that is a language-specific trick, so my solution is not going to cover that. It’s not important enough to make a meaningful difference in your interviews.
Problem
Given the root
of a binary search tree, rearrange the tree in in-order so that the leftmost node in the tree is now the root of the tree, and every node has no left child and only one right child.
Example 1:
Input: root = [5,3,6,2,4,null,8,1,null,null,null,7,9]
Output: [1,null,2,null,3,null,4,null,5,null,6,null,7,null,8,null,9]
Example 2:
Input: root = [5,1,7]
Output: [1,null,5,null,7]
Constraints:
The number of nodes in the given tree will be in the range
[1, 100]
.0 <= Node.val <= 1000
You can test your solution here
I found this amazing little skit from the legendary Monty Python. I’m linking it because somehow the absurdity of this skit is even more relevant today than it was all those years ago. Check it out, I’m sure you’ll have a great laugh.
If you want to avoid useless meetings like this, make sure you go through our post on better documentation shared yesterday.
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Go kill all and Stay Woke,
Devansh <3
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