Practice Chapter Summary (6.18) - Chapter 6: Arrays and Strings in Java

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8 questions

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6 sample questions

Question 1.
What is the syntax to declare an array of integers in Java?
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Remember the data type comes first.
Question 2.
How do you access the first element of an array?
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Think about how indexing starts.
3Question 3.
What does an array hold?
- Mixed data types
- Fixed-size, same-type elements
- Strings only
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Focus on the definition of arrays.
4Question 4.
Are strings mutable in Java?
- True
- False
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Think about string modification.
Question 5.
Write a program that reads 5 integers into an array and finds the average.
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Consider how you will read input and calculate the sum.
Question 6.
Create a two-dimensional array for a 3x3 matrix and write a function to transpose it.
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You will need to swap the row and column indices.

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