Arrays in Computer Applications

These flashcards cover key concepts related to arrays as discussed in the lecture on arrays in computer applications.

Array

A set of values that are logically related to each other, accessed by the same name.

Element

Each individual value in an array.

Index

A positive integer value that starts from zero and is used to access an element in an array.

Dimension

The number of indices needed to specify an element in an array.

One-dimensional array

An array that uses one index, sometimes called a simple array.

Multidimensional array

An array that uses more than one index, separated by commas, up to 32 dimensions.

Jagged array

A one-dimensional array with arrays as its elements, where elements may not be of the same size.

Declaring an Array

Creating an array by specifying its name and defining its size.

Initializing Array Values

Assigning initial values to an array at the time of its declaration using array literals.

Storing Values to an Array

Assigning values to an array either by directly referencing indices or using array literals.

For-Next Loop

A loop structure used to iterate over the elements of an array.

ReDim

A keyword used to (re)specify the size of an array during runtime.

Preserve

An optional keyword used with ReDim to keep the current values of the elements when resizing an array.

LBound

Returns the smallest index of the indicated dimension of a specified array.

UBound

Returns the largest index of the indicated dimension of a specified array.

Array.Clear Method

Sets the value of an array to the default value of its data type.

Nothing

Sets the value of the array to null.

Erase Statement

Used to release array variables and reallocate their memory.

Dynamic Array

An array that can change in size during runtime.

Matrix

A type of data model used to represent an array in two dimensions.

Bitmap Image

A type of image data that can be represented using arrays.

Accessing Array Elements

Refers to retrieving specific elements using their indices.

Curly Braces in Arrays

Used to define array literals in programming.

Upper Bound

The largest index or subscript in a specific dimension of an array.

Lower Bound

The smallest index or subscript in a specific dimension of an array.

Processing Array Elements

Carrying out operations on each element of the array, often using loops.

Array Size

Determined by multiplying the lengths of each dimension and can be declared in multiple ways.

Data Type of Array

The kind of data that the elements of an array will store, such as integers or strings.

Element Access Syntax

Using the array name and the index in parentheses to reference an element.

For-Each Loop

A looping structure which processes each element of an array without using an explicit counter.

Program Structure

The format and methods used to gather input, manipulate arrays, and output results.

Visual Basic

A programming language used to create dynamic arrays and manipulate them.

Incrementing Numbers

A common pattern in populating arrays, where values are generated based on a sequence.

User Input Array

An array populated by values entered by users during program execution.

Shifting Array Elements

An operation involving moving all elements of an array to a different position.