How do you determine how the elements of an array can be used in a program?
What will be an ideal response?
Refer to the array declaration to determine how the elements can be used. For example, if the array is declared with the
type int [], then each element of the array is an individual int, and can be used in any way that is appropriate for an int.
If the array is declared with a type that refers to a class, then the array elements are all references to objects of that class and can
be used as such.
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What are two advantages of using a reference-based implementation of the ADT list instead of an array-based implementation?
What will be an ideal response?
What will be printed after the following code is executed?
``` String str = "abc456"; int m = 0; while ( m < 6 ) { if (Character.isLetter(str.charAt(m))) System.out.print( Character.toUpperCase(str.charAt(m))); m++; } ``` a. abc456 b. ABC456 c. ABC d. 456