Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Nested for loops are a way to repeat a set of instructions multiple times within another loop. It allows you to iterate over elements in a multi-dimensional data structure, such as a 2D array.
This term refers to an error that occurs when you try to access an element in an array using an index that is outside the valid range. For example, if you have an array with 5 elements and you try to access the element at index 10, this exception will be thrown.
3D Arrays: A 3D array is a multi-dimensional data structure that stores elements in three dimensions. It can be thought of as a cube or a stack of matrices, where each element has three indices instead of two like in a regular 2D array.
Iteration refers to the process of repeating a set of instructions multiple times. It is commonly used with loops to perform tasks repeatedly until certain conditions are met.