Quiz Yourself on 2D Arrays

Attempt the following quiz to test your understanding of 2D arrays.

Consider the following segment:

String[][] families = {{"Kim", "Allen"}, 
                       {"Nancy", "John"}, 
                       {"Chris", "Samantha"}, 
                       {"Rob", "Mary"}}

What is the value at families[2][0]?

Nancy

Chris

Allen

Question 1 of 140 attempted

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Understanding the AP CS A

Test Preparation Guidelines

Before We Begin

Introduction to Java

Unit 1: Primitive Types

Unit 2-1: Using Objects

Unit 2-2: Java Strings

Unit 2-3: Java Math and Wrapper Classes

Unit 3: Boolean Expressions and if Statements

Unit 4: Iteration

Project I: Guess the Right Number

Unit 5: Writing Classes

Unit 6: Arrays

Unit 7-1: ArrayList

Unit 7-2: Searching and Sorting Algorithms

Unit 8: 2D Arrays

Project II: Tic-Tac-Toe

Project III: Amazon's Top 50 Bestselling Books Dataset

Unit 9-1: Inheritance

Unit 9-2: Polymorphism

Unit 9-3: Abstract Classes and Interfaces

Unit 10: Recursion

Project IV: Doctor on Call

Java Tools and Tips

Wrapping Up

AP CS A Practice Exam 1

AP CS A Practice Exam 2

AP CS A Practice Exam 3

Quiz Yourself on 2D Arrays