Unit 6: Arrays

Class Periods: 6-8

AP CSA Exam Weighting: 10-15%

6.1. Array Creation and Access
  • 6.1.1. Declaring and Creating an Array
  • 6.1.2. Using new to Create Arrays
  • 6.1.3. Initializer Lists to Create Arrays
  • 6.1.4. Array length
  • 6.1.5. Access and Modify Array Values
  • 6.1.6. Programming Challenge : Countries Array
  • 6.1.7. Design an Array of Objects for your Community
  • 6.1.8. Summary
  • 6.1.9. AP Practice
  • 6.1.10. Arrays Game
Start Section
6.2. Traversing Arrays with For Loops
  • 6.2.1. Index Variables
  • 6.2.2. For Loop to Traverse Arrays
  • 6.2.3. Looping From Back to Front
  • 6.2.4. Looping through Part of an Array
  • 6.2.5. Common Errors When Looping Through an Array
  • 6.2.6. Programming Challenge : SpellChecker
  • 6.2.7. Design an Array of Objects for your Community
  • 6.2.8. Summary
  • 6.2.9. Arrays Game
Start Section
6.3. Enhanced For-Loop (For-Each) for Arrays
  • 6.3.1. Foreach Loop Limitations
  • 6.3.2. Foreach Loop Algorithms
  • 6.3.3. Programming Challenge : SpellChecker 2
  • 6.3.4. Design an Array of Objects for your Community
  • 6.3.5. Summary
Start Section
6.4. Array Algorithms (FRQs)
  • 6.4.1. Accumulator Pattern for Sum/Average
  • 6.4.2. Min, Max, Search Algorithms
  • 6.4.3. Test Property
  • 6.4.4. Pairs and Duplicates in Array
  • 6.4.5. Rotating Array Elements
  • 6.4.6. Reversing an Array
  • 6.4.7. FRQ Practice
    • 6.4.7.1. Free Response - Horse Barn A
    • 6.4.7.2. Free Response - Horse Barn B
    • 6.4.7.3. Free Response - Self Divisor B
    • 6.4.7.4. Free Response - Sound A
    • 6.4.7.5. Free Response - Sound B
    • 6.4.7.6. Free Response - Number Cube A
    • 6.4.7.7. Free Response - Number Cube B
Start Section
6.5. Unit 6 Summary
  • 6.5.1. Concept Summary
  • 6.5.2. Java Keyword Summary
  • 6.5.3. Vocabulary Practice
  • 6.5.4. Common Mistakes
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6.6. Mixed Up Code Practice
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6.7. Toggle Mixed Up or Write Code Practice
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6.8. Code Practice with Arrays
  • 6.8.1. More Practice
Start Practice
6.9. Multiple-Choice Exercises
  • 6.9.1. Easier Multiple Choice Questions
  • 6.9.2. Medium Multiple Choice Questions
  • 6.9.3. Hard Multiple Choice Questions
Start Exercises
6.10. Practice Exam for Arrays
Take Practice Exam
6.11. More Code Practice with Arrays
Start Additional Practice