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Unit 7
Arrays and matrices
Summary
Array
Declaration of array variables
Creation of an array object
Access to the single elements of an array
Number of elements of an array: instance variable
length
Expressions that denote array objects
Example: sum of the elements of an array of integers
Example: exhaustive search of an element in an array
Example: search of the maximum element in an array of numbers
Example: inverting the contents of an array
Parameters passed to a program
Matrices
Expressions that denote matrix objects
Number of rows and columns of a matrix
Example: printing out the elements of a matrix ordered by rows and by columns
Example: sum of two matrices
Example: product of two matrices
Example: sums of the rows of a matrix
Exercise: apartment owners
The class
ApartmentOwner
: representation of the objects
The class
ApartmentOwner
: public interface
The class
ApartmentOwner
: realization of the methods
Exercises
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