This post shows you how to use arrays in Python and why this data structure is so useful. A foundational skill for data science, coding, and more!

As an FYI, nosferatu-man's and my solutions are better than S. Carton's, but require Python 2.4. The "key" parameter to sort/sorted does a "Decorate-Sort-Undecorate" [1] automatically, whereas the ...

Any functions that accept a NumPy array as an argument should be properly typed, so that Cython knows how to interpret the argument as a NumPy array (fast) rather than a generic Python object (slow).