Christianson

Assume you have the following array: int[] a = {1,2,3,4,5}; How would you increment the fourth element in the array by one?

• 3++;

• 4++;

• a[2]++;

• a[3]++;

• a[4]++;

What does the String method indexOf() do?

• Returns the location of a certain character in the String object.

• Tests two String objects for equality.

• Compares this String with a secondString for greater than, equal to or less than

• Returns the character at a certain location.

• Returns the length of a String.

Consider the following code:

String str = "Computer Science";

Which of the following statements correctly prints the last character in the String str?

• System.out.println(str.charAt(0));

• System.out.println(str.charAt(1));

• System.out.println(str.charAt(str.length()));

• System.out.println(str.charAt(str.length() - 1 ));

• . System.out.println(str.charAt(str.length() + 1 ));

Consider the following Strings:

s1 = "PH";

s2 = "ph";

s3 = "Patrick Henry";

Given that P comes before p in dictionary order, which of the following is true?

• s1.compareTo(s2) < 0 && s2.compareTo(s3) < 0

• s2.compareTo(s1) < 0 || s3.compareTo(s1) < 0

• s3.compareTo(s1) < 0 && s1.compareTo(s2) < 0

• ! (s1.equals(s2) && s3.compareTo(s2) < 0)

• s1.compareTo(s2) <= 0 && s2.compareTo(s3) < 0

The index of the last element of an array is ______.

• .size

• .length

• .length - 1

• .size - 1

• .length()

Consider the following code:

if(s.toLowerCase().equals(s.toUpperCase()) System.out.println("*");

• Tests if the String s contains only non-letter characters.

• Tests if the String s contains Only upper-case letters.

• Tests if the String s contains only digits.

• Tests if the String s contains Only lower-case letters.

• None of the above

Which of the following can be stored in a standard array?

• ints

• Strings

• boolean

• doubles

• All of the above

Which of the following would be a for loop be best for?

• Input names until the user enters "Stop".

• Input 34 test scores

• Input words until the total length of the words is greater than or equal to 1000.

• Input numbers until the user types in -1.

• Input numbers and calculate the sum. Repeat until the sum is greater than 100.

Fill in the blanks on the following for loop header so that the code prints the numbers:

2 4 6 8. for (int i = ___; i ____; i _____) System.out.print(i + " ");

• 2, < 10, += 2

• 0, < 10, += 2

• 2, <= 10, ++

• 2, <= 10, += 2

• 0, <= 10, += 2

. Fill in the blanks on the following for loop header so that the code prints the numbers:

9 8 7 6 5 4 3 2 1. for (int i = ____; i ____; i ____) { System.out.print(i + " ");

• 10, > 1; ++

• 10, >= 1; --

• 10, >= 1; ++

• 10, > 1; --

• 9, >= 1; --