I had a mock interview this morning. I learned such important lesson in mock interview. Actually I tried to reconstruct a linked list involving four nodes in the linked list. Actually I can just swap values in those two nodes instead.
After the mock interview I also learned the lesson to write a recursive solution. Since I can write the algorithm in less than 10 minutes.
Here is the transcript at 8:00 AM mock interview.
Here is my C# practice after the mock interview.