CSC251-N811 Exam2 Study Guide Chp7

The subscript is outside the range of valid subscripts for the array.

What does it mean for a subscript to be out-of-bounds?

The arraylist class

A class in the Java API that is similar to an array and allows you to store objects.

False

If a[] and b[] are two integer arrays, the expression a == b compares the array contents.

0

The first subscript in an array is always

Arrays

Hold multiple values of the same data type simultaneously

with add method

How do you add items to an ArrayList object?

List.remove(index);

How do you remove an item from an ArrayList object?

Subscript

Identifies a specific element in the array.

Size declarator

In an array declaration, this indicates the number of elements that the array will have.

True

Java does not limit the number of dimensions an array may have

Enhanced for loop

Specialized version of the for loop that simplifies array processing

Variable length argument lists

A method that accepts any number of arguments when it is called.

True

To determine if two arrays are equal, you must compare each of the elements of the two arrays.

2D arrays

Two-dimensional arrays are sometimes called

Sorting algorithm

Used to arrange data into some order

It crashes the program and displays a runtime error message.

What happens in Java when a program tries to use a subscript that is out-of-bounds?

2 sets of brackets and 2 size declarators

What is required to declare a two-dimensional array.

0 through 3

What would the valid subscript values be in a four-element array of doubles?

True

You do not use the new key word when you provide an initialization list in One and two-Dimensional array

Length

public field that every array have

import java.util.ArrayList;

what important statement must you include in your code in order to use the ArrayList class?

The smallest value and moves it to element 0 and so on

what value in an array does the selection sort algorithm look for first? when the selection sort finds this value, what does it do with it?

True

when an array of objects is declared but not initialized the array values are set to null

True

An ArrayList object automatically expands in size to accommodate the items stored in it

True

An array's size declarator must be a non-negative integer expression.

True

Both of the following declarations are legal and equivalent:int [ ] numbers;int numbers [ ];

when the program runs

Array bounds checking happens

True

As with one and two dimensional arrays, you do not use the new key word when you provide an initialization

1 less than the number of elements

The last subscript in an array is always

Search Algorithm

A method of locating a specific item in a larger collection of data

Ragged Arrays

When the rows of a two-dimensional array are of different lengths, the array is known as