While the Quicksort is relatively fast, O(nlog(n)) in terms of speed on average, a lot of programmers fear it because they don’t like, understand, or maybe even know about recursion. Recursion is the process of a function calling itself. There is usually a slight penalty for recursion as each function call is slower than if…
The bubble sort is one of the simplest sorts you can write, from a developer’s perspective. Unfortunately, it is one of the slowest to run from the computer’s perspective. A Bubble Sort works on the following idea. Given a list of values, start at the top value, and look at the next value. If the…
C++ gives you a lot of ways to do math, built into the language directly. Unfortunately, it can get complex – so we’re going to focus on the simple stuff. The order of operation in C++ is the same as in algebra, so that is easy to remember. + is addition – is subtraction *…
Identifiers An identifier is a name of a variable or function in C++. The same basic rules you had in Python exist in C++. Can’t be a reserved word/keyword Case sensitive (name, Name, and NAME are all different things) Can only be used in one context Must start with a letter May have letters, numbers,…
Let’s take the simple example from before, and work on getting inputs from a user: In the example, we specifically set the radius, however we want to get that information from the user. With Python, we had a single command, however in C++ getting an input will consist of two steps. First we need to…
Let’s walk through the steps to create a simple C++ program that will calculate a circle’s area using the formula area = pi x r2 First we’ll set up our preprocessor directives, and an empty main function. Next we will need to define variables that will be used by the program. In C/C++ we must…
A web page is made up of tags, which help tell the browser how to display a webpage. Within a tag, you may have attributes which provide some additional information to help display the webpage better. Tags Tags are used to define the elements within a web page. Tags are enclosed within angle brackets, <…
Writing the Document A web page is written as a plain text file. That means you can write it with a text editor such as Notepad, Notepad++, etc. You do not need a special web page builder or tool to create pages. Those can make it a little easier, but often cost a lot more…
