Section 7 - Data Structures

Arrays

Arrays are static data structures, meaning they only hold a finite number of items of the same type which are accessed via indices. A zero-indexed array means the first item is accessed with the index 0.

A two-dimensional (2D) array is where each item is a 1D array. This can be visualised as a table. Individual items are referred to as "array[row, column]" in OCR reference language. You can have more than two dimensions for an array.

Tuples

Tuples behave and are accessed like an array. The difference is that tuples are immutable, meaning their values cannot be changed, and tuples can hold data of more than one type.