Leetcode discuss: 236 Lowest common ancestor in binary tree

Here is the post.

C# various topics covered in 2020 practice

May 27, 2020

I continue to ask the algorithm question in my interviewing dot io mock interviews as an interviewer in 2020, and then I was surprised to learn more about recursive function design, strong type, backtracking, and expedite the tree problem solving process.

To work on my C# crafting skills, I also practice the idea after each mock interview.

April 19, 2020
C# backtracking practice after mock interview on April 19, 2020

May 1, 2020
Return Tuple<TreeNode, int> or ArrayList? Always strong typing
C# Postorder traversal and count nodes found practice in 2020 Learn from ex-facebook engineer, super performance, April 30, 2020

May 25, 2020
C# Tuple<TreeNode, int> design talk and second practice on May 25 2020
C# Tuple<TreeNode, int> design talk and quick practice in May 25 2020

Follow up with review
May 26, 2020
C# Find path from root to p practice on May 26, 2020
C# Critic my own code written on May 7, 2019 Write review for my own code after 12 months

Statistics:

1. 40 mock interviews as an interviewer, ask lowest common ancestor in binary tree algorithm in 2019;
2. Work on recursive function design over 10 times;
3. Work on backtracking practice over 10 times;
4. All engineers over 40 engineers in two months I met in 2019 cannot beat performance I met in 2020, an ex-facebook engineer.

backtrackingstrong type data type