In this video, we’ll talk about return statements and recursion. In a previous video, we talked about how the value that you get from a function is the return value. If I call type(4), I get the return value of int. How does the type() function return the type int value? Let’s write a function that adds two numbers and returns the result the same way how the type() function gets a result.

Notice how the function uses the...

In this video, we’ll talk about more operators you can use, conditionals, and recursion. We’ve talked about the basic operators in the previous videos. Operators like plus, minus, multiply, and division. A very commonly used operator is modulus or also called modulo. What’s modulus? Modulus works on integers and finds the remainder when dividing two numbers. The modulus operator is the percent sign (%). For example,

Think of dividing 7 by 3, but what gets returned is the remainder,...

This video will expand on the basic concepts that we talked about in the previous video. In the first video, we talked about a terminology called assignment. x = 5 is an assignment. You assign values to variables. A variable can be assigned many times, and it always keeps the value of its most recent assignment. If I do, x = 7, it replaces x = 5. You can do x = x + 1, which adds 1 to its...

Intro Computer Science is not the study of computers nor is it only about programming. Sometimes, when people hear about Computer Science, they think oh, computers and programming! In reality, computers are just a tool in computer science, and programming simply executes a sequence of instructions that we create. Computer Science is all about computation, asking the question: “What exactly can be computed, how can we compute it, and how fast we can compute it?” Computation is a fancy way...