Minimum Remove to Make Valid Parenthesis in Java

Good morning. Hope you are doing well and keeping safe. Not sure what is happening with the COVID-19 pandemic. In some parts of the world i.e., Peru, hospitals are full and people are dying out of control. On the other hand in Sicily, Italy most people are socializing and not wearing masks. In Israel the entire population is receiving the second shot of the COVID-19 vaccine.

Close to home, my wife and I continue to practice social distancing. On Sunday we had family members visiting. No one wore masks but we all kept at a distance from each other. Of course, we will not know if something happened for a couple weeks. Continue reading “Minimum Remove to Make Valid Parenthesis in Java”

A or B

Over the weekend I watched the YouTube video “Dealing with Negative Comments | AMA #3 – Ask Me Anything with Lex Fridman”. I have watched a few of his videos. I do enjoy them to the point that I have subscribed to them. There is one in which Lex interviews Donald Knuth and other where he interviews Andrew Ng. Both videos are over an hour so I will watch them over the weekend.

If you are interested in getting information about Lex Fridman you can find it here or there.

I picked the challenge “A or B” from HackerRank after receiving an email message. I guess that if you solve a few of their problems they like you to continue visiting their site and solving additional challenges. I like to work on one or two a week. I believe it is the only way to learn and / or refresh material. Continue reading “A or B”