2. Ordered Lists

When data items (also called elements or nodes) are related to one another, they can be organised as a list.

Each element in the list is stored in memory, one after the other.

Ordered List

The collection of every English letter creates a list known as the English alphabet and of course there are 26 of them. The alphabet is an example of an ordered list, where every element is in its logical position according to some rule.

Ordered lists may be in ascending or descending order, time order etc.

In languages such as Python, ordered lists are very similar to arrays (discussed here). The key difference is that you cannot perform arithmetic operations on a list, but you can on an array.