This past week my wife, our granddaughters and I returned from a holiday trip to Europe. We visited several cities in Italy, Belgium and Amsterdam. We flew commercial airlines to move between large cities. This made me think of airplane routes and filling up the tanks with fuel. For efficiency reasons airplanes do not get refueled on each stop if it can be avoided. Depending on the part of the world you travel to, airplanes have minimum amounts of fuel they must have on board when they takeoff. The amount depends on the distance to the next stop. I know a few things about the subject because I flew for fun private planes for a few years. For personal reasons (wife and family) I decided to stop. Continue reading “Plane Routes”
Java Collections List
It is a gloomy Tuesday in the Twin Cities of Minneapolis and St. Paul. It rained last night. It is quite damp. It is a typical fall day in this part of the country. The only difference is that in the past two years the lawns are green instead of being brown. I do not know for sure the cause for the climate change which is a very controversial topic, but for sure something is changing.
I am going to quickly cover some operations with Lists in Java. Will use lists on my next post. I need a refresher given that lately I have been working with C/C++ and after a few weeks (which in this case included a two week holiday) of not working with a programming language I tend to stumble with the syntax. It all gets back after a day or so of concentrating on the specific language. Continue reading “Java Collections List”
This blog entry was motivated by the description and implementation of Java Generics in the Algorithms fourth edition book by Robert Sedgewick and Kevin Wayne. The code in this post is based on their implementation. I did some minor changes.
Collections, Generics and Iterators are important concepts in object oriented programming languages. It is central to understand the reasons for them and the associated ideas. If you are interested (and you should if you work with object oriented languages) get a copy of the book and take a look at pages 132 – 141. Continue reading “Generics”