Exam 8: Arrays

public static int[] sampleArray() { int studentScores = {72, 91, 83}; ____ } Using the above code, write the statement that will return the array name.

Providing values for all the elements in an array is called ____ the array.

Write the statement to declare an array variable named studentScores with type double. Write a second statement to create an array of 10 objects.

What does an array's name represent and what value does it hold when declared?

When you declare int[] someNums = new int[10];, each element of someNums has a value of ____________________ because someNums is a numeric array.

Individual array elements are ____ by value when a copy of the value is made and used within the receiving method.

When populating an array with an initialization list, you do not need to use the new keyword or provide an array size. Explain why this is the case.

Using just one statement, declare and create an array that will reserve memory locations for 10 scores values that are type double.

String[] countyNames = {"Clark", "Delaware", "Madison"}; What will be the value of countyNames[0].length(), countyNames[1].length(), and countyNames[2].length()?

Which of the following statements correctly declares and creates an array to hold five double scores values?

Primitive type variables are always passed by ____.

A(n) ____ loop allows you to cycle through an array without specifying the starting and ending points for the loop control variable.

double[] studentScores = new double[3]; studentScores[0] = 93; studentScores[1] = 77; studentScores[2] = 85; Write a println statement to display the last element of the studentScores array.

How would you use a method that belongs to an object that is part of the array? Use an example and demonstrate with Java code.

A(n) ____________________ is a named list of data items that all have the same type.

int[] sixNumbers = {1, 2, 3, 4}; The above code creates an array named sixNumbers. Describe how array sizes are determined when using an initialization list and how memory is assigned.

Match each term with the correct statement below. -Declared in the same way you declare any simple variable

When using parallel arrays, if one array has many possible matches, it is most efficient to place the less common items first so that they are matched right away.

The following statement declares an array: int[] increaseValues = new int[5] final int PLUSTWO = 2; Create a loop that will add 2 to every array element. Use a symbolic constant named PLUSTWO and use the length field in the loop that will contain the number of elements in the array.

Why is the length field a good option when writing a loop that manipulates an array? What programming error is common when attempting to use length as an array method?