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3 cards from this section. Quick, good the night before a test.
What is the syntax to access the first element of an array named 'data'?
Remember that indexing starts at zero.
Given an array 'int[] arr = {1, 2, 3};', what is 'arr[1]'?
Look at the position of the elements carefully.
What index would you use to access the first element of an array?
Think about how we count.
True or False: An ArrayIndexOutOfBoundsException occurs when accessing a valid index.
Consider what bounds mean.
Write a method that checks if a given index is valid for a given array, returns true if valid, otherwise false.
Think about boundaries to avoid errors.
Construct a program that fills an array with random numbers and prints them. Ensure you access each number using its index.
Make sure to use random functions and loops effectively.
5 more questions in this section. Enroll free to practise them all.
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