Class IntegerBag

java.lang.Object
  IntegerBag

public class IntegerBag
extends java.lang.Object

Objects of the class IntegerBag are simple representations of a set of integers supporting some basic mathematical operations (min, max, sum, and product).

Constructor Summary

IntegerBag(java.lang.Integer[] numbers)
Creates a new IntegerBag instance having the (non-null) integers in the given array in the bag

Method Summary

java.lang.Integer	max() Calculate the largest number in this bag according to Integer.compareTo
java.lang.Integer	min() Calculate the smallest number in this bag according to Integer.compareTo
java.lang.Integer	product() Calculate the product of the numbers in this bag.
int	size() Number of integers in this bag.
java.lang.Integer	sum() Calculate the sum of the numbers in this bag.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IntegerBag

public IntegerBag(java.lang.Integer[] numbers)

Creates a new IntegerBag instance having the (non-null) integers in the given array in the bag

Parameters:

numbers - Array of values to include in the bag

Method Detail

size

public int size()

Number of integers in this bag.

Returns:

Number of integers in this bag.

max

public java.lang.Integer max()

Calculate the largest number in this bag according to Integer.compareTo

Returns:

The largest number in this bag

Throws:

java.lang.IllegalStateException - if there are no numbers

min

public java.lang.Integer min()

Calculate the smallest number in this bag according to Integer.compareTo

Returns:

The smallest number in this bag

Throws:

java.lang.IllegalStateException - if there are no numbers

sum

public java.lang.Integer sum()

Calculate the sum of the numbers in this bag.

Returns:

Sum of the numbers in this bag

product

public java.lang.Integer product()

Calculate the product of the numbers in this bag.

Returns:

Product of the numbers in this bag