Package dsa

Class ResizingArrayBag<T>

java.lang.Object

dsa.ResizingArrayBag<T>

Type Parameters:

T - the type of items in the bag.

All Implemented Interfaces:

Bag<T>, Iterable<T>

public class ResizingArrayBag<T>
extends Object
implements Bag<T>

This data type provides an implementation of the Bag API, using an array as the underlying data structure.

Constructor Summary

Constructors

Constructor	Description
ResizingArrayBag()	Constructs an empty bag.

Method Summary

Modifier and Type	Method	Description
void	add(T item)	Adds item to this bag.
boolean	isEmpty()	Returns true if this bag is empty, and false otherwise.
Iterator<T>	iterator()	Returns an iterator to iterate over the items in this bag.
static void	main(String[] args)	Unit tests the data type.
int	size()	Returns the number of items in this bag.
String	toString()	Returns a string representation of this bag.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

ResizingArrayBag

public ResizingArrayBag()

Constructs an empty bag.

Method Details

isEmpty

public boolean isEmpty()

Returns true if this bag is empty, and false otherwise.

Specified by:

isEmpty in interface Bag<T>

Returns:

true if this bag is empty, and false otherwise.

size

public int size()

Returns the number of items in this bag.

Specified by:

size in interface Bag<T>

Returns:

number of items in this bag.

add

public void add(T item)

Adds item to this bag.

Specified by:

add in interface Bag<T>

Parameters:

item - the item.

toString

public String toString()

Returns a string representation of this bag.

Specified by:

toString in interface Bag<T>

Overrides:

toString in class Object

Returns:

a string representation of this bag.

iterator

public Iterator<T> iterator()

Returns an iterator to iterate over the items in this bag.

Specified by:

iterator in interface Iterable<T>

Returns:

an iterator to iterate over the items in this bag.

main

public static void main(String[] args)

Unit tests the data type.

Parameters:

args - the command-line arguments.