single quotes are used for the character (char) data type, and double quotes are used for the string data type.
I thought this was quite interesting because I thought "" and '' simply did the same thing. I did not know '' initiated a different data type.
Algorithms are often quite different from one another.
As I interpret this: There are many different ways to accomplish the same thing, so two algorithms that can perform the same tasks might be completely different from each other, with their own benefits and pitfalls.