Finally summer 2020 has arrived. Today’s high is in the lower to mid 70s. Currently the sky is overcast. My wife and I prefer it sunny but the temperature is fine with me. My wife prefers hot and humid weather. Not everyone likes chocolate. We will probably keep the windows open all day. Living in Minnesota with long and cold winters, fresh air is always welcomed.
Yesterday we spoke over Jitsi with a couple of friends we both know since our teens. We have traveled abroad on several occasions with and without family. We were going to chat last Sunday (Father’s Day) but due to our schedules we postponed it until Monday. We found out that both have been diagnosed with COVID-19 and are being treated as we speak. Their daughter, who lives with them, has not contracted the virus yet. They both looked tired so we limited our call to 20 minutes. Typically we go for a couple hours. Hopefully all will go well and they will have a short recovery! Continue reading “Visual Studio Code Install on Linux”
It is a rainy Sunday morning in the Twin Cities of Minneapolis and St. Paul. Rain started last evening around 08:00 PM and according to the weather forecast will subside later tonight around 10:00 PM. Not a nice day to be outdoors or grilling.
Last Friday my son mentioned that he would be going shopping on Saturday morning to the Costco Minneapolis Business Center Warehouse. My wife and I decided to join him at 07:00 AM (opening time). We met in the parking lot, donned our gloves and mask, and headed in. We have been at the Restaurant Depot many times, but were nicely surprised with the size of the Costco facility and the variety of items. From now on my wife and I will make the trip from home (30 minutes about 20 miles away) a couple times a month to the Costco in Minneapolis. We believe it is worth the drive.
My wife and I cook and bake. I like to bake deserts, breads and Italian cuisine. My wife cooks lunch during the workdays. We both cook on weekends. We have breakfast which I prepare every day and we both skip dinner. The point that I am trying to make is that we did not start cooking or baking due to the coronavirus pandemic.
Last week we noticed that we were running very low on yeast. We went grocery shopping last Tuesday morning and where not able to find yeast at Costco in Eagan, MN or Trader Joe’s in St. Paul. Back home, I went to Amazon.com and ordered a 2 pound pouch of Red Star dry yeast. The total after taxes (we do have Amazon Prime) came to $24.99 USD. I thought it was expensive but it seems that every one and their brother are baking now a day. The delivery will be sometime tomorrow (Monday).
While at Costco we found lots of Red Star dry yeast in the same 2 lb pouches we ordered from Amazon. That is the same yeast we have been using for over a decade. What we found disgusting was that Costco had the same 2 lb pouches of yeast for under $4.50 USD each. We bought two pouches (totaling 4 lbs) for about $9.00 USD. They should last a year or so. Continue reading “Disjoint Union Sets”
Noticed that some of the code blocks had additional characters e.g., &s. I removed and inserted the original code blocks. The code looks good. Sorry about that.
Today is Saturday March 07, 2020 and the high for today in Apple Valley, MN is forecasted to be in the low to mid 50’s. Tomorrow we should be hitting low to mid 60’s. We can call it global warming or whatever you would like, but the global climate is changing. We can debate the reasons but Occam’s Razor problem-solving principle would attribute it to us humans.
One way or the other, my wife and I believe that we are doing our part. Starting this month, the neighborhood has hired a new company for garbage removal. They collect both bins every week. Possible smell during summer would prevent us from keeping our garbage for more than a week, but we generate such a small amount that the service could pick it up once a month. Continue reading “Sort on Frequency”
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”
Over the weekend my wife and I tried baking baba (Italian yeast cake) using a large mold. Typically baba is baked in individual small molds but it takes a while to grease and fill them. We tried for the first time using a large mold. All was going well until we put the mixer bowl covered with plastic in the oven with the lights on for it to ferment and double in size. After a couple hours the dough had pushed its way out of the bowl and spilled over the oven floor. We had to clean the mess before baking. We also moved the contents of the bowl into the large baking mold. Continue reading “Larry’s Array”
As I mentioned in my last post, I read the article “A* search: what’s in a name?” by James W. Davis and Jeff Hachtel. If interested, you may find the article in Communications of the ACM, December 2019, Vol. 63 No. 1, Pages 36-37. The article deals with the name of a search algorithm that was originally published in 1968 by Peter Hart, Nils Nilsson and Bertram Raphael of Stanford Research Institute.
My interest was not much about the name but to be able to experiment and understand the algorithm. There are so many algorithms in Computer Science that adding one more to my list is always welcomed. I do not plan on memorizing the algorithm but if the time comes when I might need to search a graph, I will have one more choice in my toolkit. Continue reading “A* Search Algorithm”
It is the Sunday of Labor Week 2019. Woke up as usual, fixed breakfast and then woke up my wife. After having breakfast got ready and went down to my office for my first work block of the day.
Yesterday afternoon we stopped by my son’s place and cooked paella in the wood pit. It was pretty good. This time we did not use red peppers. It seems to taste better with them. Continue reading “Stack Array”
It is a cooler summer Saturday in the Twin Cities of Minneapolis and St. Paul. My wife and I are planning to go out for lunch. As soon as she is ready we should leave.
In the recent posts “MongoDB Text Search” and “Find Damaged – Part II” for one reason or another I have been dealing with full text searches. The MongoDB post covers how to use text searches in the database. A software engineer was in the process of experimenting with MongoDB on the cloud (Atlas) and was interested in performing text searches. The need was associated with a work related request. Continue reading “Rabin-Karp Algorithm”
Yesterday I spent time attempting to port a C DLL that I wrote some time ago to generate MD5 digests for a storage server. At the time I used as a base code provided by RSA Data Security, Inc. and designed and implemented a set of functions that could be directly called in applications / servers that would require generating MD5 digests for strings and files. When done I package the results into a DLL. The library has been in production for a long time. I used the C programming language for performance and the code was built for 32-bit processors. Continue reading “C++ Boost Library Visual Studio 2017”