Arrays

Front

What is an array in programming?

Back

An array is a data structure that can store a fixed-size sequential collection of elements of the same type.

Front

How are arrays typically represented in terms of dimensions?

Back

Arrays are represented by their dimensions, such as 2 x 4, which indicates 2 rows and 4 columns.

Front

What are the two main components of an array?

Back

Rows and columns.

Front

In a 2D array, which direction do columns extend?

Back

Columns extend vertically.

Front

What is the difference between a one-dimensional array and a two-dimensional array?

Back

A one-dimensional array is a linear list of elements, while a two-dimensional array is a grid of elements organized in rows and columns.

Front

How do you access an element in a two-dimensional array?

Back

You access an element using its row and column indices, for example, array[row][column].

Front

What is the significance of the size of an array?

Back

The size of an array determines how many elements it can hold and affects memory allocation.

Front

Can arrays hold different data types?

Back

No, arrays typically hold elements of the same data type.

Front

What is an example of a common use case for arrays?

Back

Arrays are commonly used to store lists of items, such as scores in a game or names in a contact list.

Front

What happens if you try to access an index outside the bounds of an array?

Back

Accessing an out-of-bounds index typically results in an error or exception.