Saturday, March 2, 2019

Weekly contest 126

March 2, 2019


Introduction


It is my favorite weekly contest. I played the contest and I like to share my performance.

My performance


Here is my performance.


Source code from top 10 players


I just could not believe that I can read top 10 players source code. I never know that I can do it until today I read the instructions.

I could not believe that I am so careless. I will figure out best solutions through those top 100 players.


Score two algorithms:

1003. Check if word is valid after substitutions. Here is the link.
1002. Find common characters. Here is the link.

Fail to pass all test cases:
Here is the folder to contain the code.



Time to change


It is time for me to work on one hard level algorithm a week. I can just choose to work on the hard level algorithm in weekly contest.

I really like those algorithms in the weekly contest. The hard level algorithm in the contest and also the third algorithm I usually do not have time to complete, because I do not come out short and elegant solution. I involve too much detail in the implementation.

How to motivate myself? Think about those huge reward in the salary to work for top 4 software companies. Usually dynamic programming solution is hard level, and it is used to differentiate that you are senior level or just junior level. Why I stop practice dynamic programming? Should I practice one at least a week for fun, and continue to learn things from the problem solving?

Another idea is for me to work on, I need to choose one classical algorithm to ask in the interview. I should ask one dynamic programming algorithm. Usually it is the first algorithm in Google phone screen. I should hold high standard to quickly filter out the interviewee.

Since I schedule four interviews a week as an interviewer on interviewing.io, I can plan to work on dynamic programming algorithm more often this year.


I also should use the opportunity to learn and improve my dynamic programming solving skills.


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