Using with in Python

It is Wednesday in the Twin Cities of Minneapolis and St. Paul. My wife and I spent most of the morning dealing with health insurance. Hopefully all will be done in the next few days. I am in the process of changing health insurance companies. Due to the COVID-19 pandemic everyone is using some type of video application to communicate. The proposed application was Zoom, but due to the security issues, we prefer using Jitsi. It did not take more than a minute to switch applications. It is interesting that video on Jitsi was working great but one of the participants decided to use our cell phones for voice because he did not have a camera or microphone on his computer. The cellular signals were not that great, but we managed. Continue reading “Using with in Python”

Contains Close Numbers

It is another COVID-19 (Wuhan virus) pandemic day. Seems like the stats for Minnesota and Dakota Country, the county I live in, are not increasing out of control. As a matter of fact they might be in a plateau. As we speak Minnesota has 34 total deaths which represents .001% of the population, and Dakota County continues to have 3 deaths which represents .001%. Best wishes that things are getting better where ever you are.

Italy is already talking about different ways to get people back to work. Hopefully they can do it in the near future. The United States will hopefully also get back to normal in a month or two. Failure to get the economy up and running will have very bad repercussions. Let’s continue to keep social distance and slow down new COVID-19 cases. Continue reading “Contains Close Numbers”

Graph Multiple Costs

Due to the Corona Virus or COVID-19 the entire world is experiencing situations that we have never seen before. The Internet, TV and other news sources are full of reports. Some of them have good and valuable information while most are just opinions which have no scientific background. We should seek information from reliable sources and when possible check our findings against multiple reliable sources and use common sense, which as we know is not the most common of the senses.

Yesterday evening I started this post and wrote about two pages regarding COVID-19. Today started reading it and decided to delete them with the exception of the first sentence. There is already too much information out there. Please stay home. If you need to go out for groceries, please keep social distance. Healthcare facilities are already taking care of more patients that they were designed for. Continue reading “Graph Multiple Costs”

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”

Binary Tree Sum

In this post we will develop a couple methods to collect some information from a binary tree. The first method will be the base, and the second will be an enhancement of the first.

The first requirement is:  given a binary tree with double values, compute the sum of all nodes in the tree.

The second requirement is:  given a binary tree with double values, compute the sum of all nodes whose values are in a specified range (e.g., [ 10.0 : 15.0 ]). Continue reading “Binary Tree Sum”

Sum of Two

I received a notification via email that Nicholas White had put a new video in YouTube. If you are interested, the video is named Google Coding Interview Question – Sum of Two. I enjoy working on problems. Try to get a few each week.

Let’s skip the chit chat and go directly to this problem. The statement for the problem follows:

You have two integer arrays a and b, and an integer target value v.

Determine whether there is a pair of numbers, where one number is taken from a and the other from b, that can be added together to get a sum of v.

Return true if such a pair exists, otherwise return false. Continue reading “Sum of Two”

GitHub, Git and VSCode

Today is Saturday February 15, 2020 and the temperature is about 35 F which is a great improvement from yesterday. We woke up at -15 F which was exactly 50 degrees cooler. I am on the second block for the day. My wife and I already had our tea with lemon and she is getting in the shower. She will let me know when ready so I can shutdown my computer and start working on lunch. Hopefully I will be able to complete this post today; otherwise it will be ready tomorrow morning. Continue reading “GitHub, Git and VSCode”

Cipher

I was somewhat busy over the weekend. My wife and I were going to make some cannoli but for simplicity we decided to bake some chocolate cornetto. We are planning on making cannoli next weekend.

Last week I was reading the web page from Microsoft Dynamics 365 Connected Store. It uses video cameras and IoT devices to capture non-PII (Personally Identifiable Information) from customers that can be used by the store to improve service and increase sales. I spend time reading different related articles and watching YouTube videos. I am impressed with the approach to the subject by Microsoft. Most companies try to incorporate PII data but that may have many implications for the store, customer and the ability to offer the system to customers in different parts of the world due to local laws. I can go on and on but that would take us out of the topic for this post. Continue reading “Cipher”

Jumping on the Clouds

Earlier today I was scrolling through YouTube videos and Jumping on the Clouds HackerRank Solution by JAVAAID came up. About the time this channel was starting the author and I exchanged some messages. In general I do not spend too much time watching this channel, but I became curios today and decided to solve the challenge and then watch the video.

Besides that and work not much else going on. My wife cooked too much for lunch so she decided to go with a friend for a walk and some shopping to the Mall of America. I assume she will be back towards the end of my workday. We need to get a birthday card for one of my sons. Hopefully she remembers and gets it while at the MOA. Continue reading “Jumping on the Clouds”

Flipping Bits

It is Sunday February 02, 2020 (02022020) and today’s date is a palindrome. Lunch yesterday was great. All the food my wife and I cooked turned out quite tasty. Today we will make a salad and sandwiches using a brioche bread loaf that we get at Trader Joe’s. We need to consume simpler and hopefully less food.

I decided to work on HackerRank Flipping bits problem. I decided to use Java 8. The problem has to do with bit manipulations. In my humble opinion, C is a much better suited language than Java. Continue reading “Flipping Bits”