AP Computer Science #1

Boolean Logic

100

NOT (TRUE OR FALSE)

What is FALSE?

400

When a program includes an OR statement and the first input is true, or when it includes an AND statement and the first input is false, this happens, preventing the second statement's evaluation.

What is short-circuiting?

500

!(T || (F && !T)) && (F || !F)

What is FALSE?

Arrays and ArrayLists

100

Given an array arr[] of ints {3, 5, 4, 7}, what value is in arr[2]?

What is 4?

200

Given an ArrayList arr of ints {3, 5, 4, 7, 6, 9, 2}, what call would be made to return the value "7"?

What is "arr.get(3);"?

300

To get the number of elements in an array, you use ____; to get the number of elements in an ArrayList you use ____. (Make sure to include parentheses where necessary)

What are "length" and "size()"?

400

When constructing an ArrayList, you cannot use this type of variable for the ArrayList's type.

What is a primitive variable?

500

This is the primary reason one would use an ArrayList over an Array.

What is dynamic resizing? (Or the ability to add elements/remove elements/change size/etc.)

Strings and Substrings

100

The two arguments in substring (int i, int j) represent

What are the starting index and the ending index?

200

The first parameter in the substring method is ____ and the second parameter is ____ (inclusive or exclusive).

What are inclusive and exclusive?

300

"abcdefgh".substring(2, 4)

What is "cd"?

400

"abcdefgh".substring(2) + "hgfedcba".substring(5)

What is "cdefghcba"?

500

"adbcefg".substring(1, 3 * "abcd".indexOf("acbcd".substring(2)) + 1)

What is "dbc"?

OOP Concepts

100

word used in header of a child class

What is extends

300

To use an object, you must do these two things.

What are Declare and Instantiate?

400

A cat ____ an animal, A cat ____ a color

What are Is-a and Has-a?