Why does the way we sort matter?

Computers sort all the time: contact lists, search results, high scores. There are many ways to do it, and they are not equally fast. Bubble, selection and insertion sort are easy to understand but need a huge number of steps when there is a lot of data. Merge sort and quick sort split the problem into small pieces, so they save many steps on big data. Try race mode with 40 bars and see the difference!