Chapter 7: Single Arrays

Question 1

What’s the preferred syntax when declaring a variable?

Answer 1

elementType[] arrayRefVar;

Double[] myList;

Question 2

How to create an array?

Answer 2

arrayRefVar = new elementType[arraysize];

Question 3

What is an indexed variable?

Answer 3

An individual element inside of an array.

Question 4

How can you create a new arrary with a name and size?

Answer 4

elementType arrayRefVar[] = new elementType[arraySize];

EXAMPLE

double[] myList = new double[10];

Question 5

What are the two types of array searches?

Answer 5

Linear and Binary, linear is better with smaller arrays and easier to set up, but binary is more effective while being harder to set up.

Question 6

What are some useful tools in java.util.Arrays?

Answer 6

sort or parallelSort - SORTS AN ARRAY

binarySearch - SEARCHES FOR A KEY IN ARRAY

equals - CHECKS TO SEE IF TWO ARRAYS ARE EQUAL

fill - FILLS IN AN ARRAY

toString - DISPLAYS A STRING OF THE ELEMENT IN THE ARRAY