Single Dimensional Arrays

Question 1

Is a data structure that represents a collection of same types data elements

Answer 1

Array

Question 2

How much can a single dimensional array store data elements?

Answer 2

One row

Question 3

Strings are Arrays

Answer 3

String Name = “John Smith”;
String courseNumber;

courseNumber = new String (“CS 1301’’);

Question 4

How do you allocate memory space for the array? arrayRefVar= new datatype [arraySize];

Answer 4

Example:
myList = new double [10];
yourList = new int [100];
herList

Question 5

How do you declare a single-dimensional array in Java?

Answer 5

Us the syntax: datatype[] array RefVar;
Example: int[] myList;

Question 6

How do you create an array in Java?

Answer 6

Use the syntax: arrayRefVar= new datatype[arraySize];
Example: myList = new int[10];

Question 7

How do you access elements in an array?

Answer 7

Access elements using the array’s index, starting at 0.
Example: mylist [0] = new int[10]

Question 8

How do you create an array in Java?

Answer 8

Use the syntax: arrayRefVar = new datatype [arraySize];
Example: myList = new int(10);

Question 9

How do you access elements in an array?

Answer 9

Access elements using the array’s index, starting at 0.
Example: myList[0] = 25.7;

Question 10

What are the default values for an array in Java?

Answer 10

Numeric types: 0, Boolean: False, Object references: null

Question 11

Indexed variables in an array?

Answer 11

An indexed variable references to array elements using their using their index, like arrayRefVar[index];