Let's start with an example. Suppose we want to put an array of n floating point numbers into ascending numerical order. This task is called sorting and should be somewhat familiar. One simple ...

Selecting subset from a set is a very common operation, for example, selecting members who are more than 40 years old from all the members in the company. In this article, we’ll compare the selection ...

Summary Some basic selections in Python are relatively easy, such as position selection and conditional selection; some selection operations are a bit convoluted, such as selecting the eligible ...