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tbarnes98
2019-08-13 11:40:00 -05:00
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16
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Labs/Lab 6/src/barnestr/ArrayList.java Normal file
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/*
* CS2852
* Spring 2018
* Lab 6 - Recursion
* Name:
* Created: 4/13/2018
*/
package barnestr;
import java.util.List;
import java.util.Collection;
import java.util.Iterator;
import java.util.ListIterator;
import java.util.RandomAccess;
/**
* A partial implementation of an array-based List to be used
* to practice implementing recursive methods.
*
* @param <E> The type of objects stored in the list
*/
public class ArrayList<E> implements List<E>, RandomAccess {
private Object[] data;
/**
* Constructs a list containing the elements of the specified collection,
* in the order they are returned by the collection's iterator.
* @param collection the collection whose elements are to be placed into this list
* @throws NullPointerException - if the specified collection is null
*/
public ArrayList(Collection<? extends E> collection) {
data = new Object[collection.size()];
int index = 0;
for(E element : collection) {
data[index++] = element;
}
}
/**
* Returns the number of elements in this list.
* @return the number of elements in this list.
*/
@Override
public int size() {
return data.length;
}
/**
* Returns true if this list contains the specified element.
* <p></p>
* More formally, returns <tt>true</tt> if and only if this list
* contains at least one element <tt>e</tt> such that
* <tt>(target==null ? e==null : target.equals(e))</tt>.
* @param target element whose presence in the list is to be tested
* @return true if the list contains the specified element
*/
@Override
public boolean contains(Object target) {
boolean found = false;
for(int i=0; !found && i<size(); ++i) {
found = target==null ? data[i]==null : target.equals(data[i]);
}
return found;
}
// TODO
private boolean contains(Object target, int position) {
if (position > size()) {
return false;
} else {
contains(target, position + 1);
}
return true;
}
/**
* Returns the index of the first occurrence of the specified element
* in this list, or -1 if this list does not contain the element.
* <p></p>
* More formally, returns the lowest index <tt>i</tt> such that
* <tt>(target==null ? get(i)==null : target.equals(get(i)))</tt>,
* or <tt>-1</tt> if there is no such index.
* @param target element to search for
* @return the index of the first occurrence of the specified element in this
* list, or <tt>-1</tt> if this list does not contain the element
*/
@Override
public int indexOf(Object target) {
int index = -1;
for(int i=0; index==-1 && i<size(); ++i) {
if((target==null ? data[i]==null : target.equals(data[i]))) {
index = i;
}
}
return index;
}
@Override
public boolean isEmpty() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public void clear() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public E get(int index) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public E set(int index, E element) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean add(E element) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public void add(int index, E element) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public E remove(int index) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean remove(Object target) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public Object[] toArray() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public Iterator<E> iterator() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public <T> T[] toArray(T[] a) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean containsAll(Collection<?> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean addAll(Collection<? extends E> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean addAll(int index, Collection<? extends E> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean removeAll(Collection<?> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean retainAll(Collection<?> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public int lastIndexOf(Object o) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public ListIterator<E> listIterator() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public ListIterator<E> listIterator(int index) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public List<E> subList(int fromIndex, int toIndex) {
throw new UnsupportedOperationException("Not implemented");
}
}

267
Labs/Lab 6/src/barnestr/LinkedList.java Normal file
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/*
* CS2852
* Spring 2018
* Lab 6 - Recursion
* Name:
* Created: 4/13/2018
*/
package barnestr;
import java.util.List;
import java.util.ListIterator;
import java.util.Collection;
import java.util.Iterator;
/**
* A partial implementation of a singly linked list to be used
* to practice implementing recursive methods.
*
* @param <E> The type of objects stored in the list
*/
public class LinkedList<E> implements List<E> {
private Node<E> head;
private Node<E> tail;
/**
* Inner class that describes a node in the singly linked list.
*/
private static class Node<E> {
E value;
Node<E> next;
/**
* Constructs a node with a specified value and reference to the next node
*
* @param value Value of the element to be stored in the node
* @param next Reference to the next element in the singly linked list
*/
private Node(E value, Node<E> next) {
this.value = value;
this.next = next;
}
/**
* Constructs a node with a specified value
*
* @param value Value of the element to be stored in the node
*/
private Node(E value) {
this(value, null);
}
}
/**
* Constructs a list containing the elements of the specified collection, in
* the order they are returned by the collection's iterator.
*
* @param collection the collection whose elements are to be placed into this list
* @NullPointerException if the specified collection is <tt>null</tt>
*/
public LinkedList(Collection<? extends E> collection) {
Iterator<? extends E> itr = collection.iterator();
if (itr.hasNext()) {
head = new Node(itr.next());
tail = head;
}
Node<E> walker = head;
while (itr.hasNext()) {
walker.next = new Node(itr.next());
walker = walker.next;
}
tail = walker;
}
/**
* Returns the number of elements in this list
*
* @return the number of elements in this list
*/
@Override
public int size() {
int size = 0;
Node<E> walker = head;
while (walker != null) {
++size;
walker = walker.next;
}
return size;
}
//
/**
* Returns true if this list contains the specified element.
* <p></p>
* More formally, returns <tt>true</tt> if and only if this list contains
* at least one element <tt>e</tt> such that <tt>(o==null ? e==null : o.equals(e))</tt>.
*
* @param target element whose presence in this list is to be tested
* @return true if this list contains the specified element
*/
@Override
public boolean contains(Object target) {
Node<E> walker = head;
boolean found = false;
while (walker != null && !found) {
found = target == null ? walker.value == null : target.equals(walker.value);
walker = walker.next;
}
return found;
}
// TODO
private boolean contains(Object target, Node<E> position) {
if (position == null) {
}
return false;
}
/**
* Returns the index of the first occurrence of the specified element in this list,
* or <tt>-1</tt> if this list does not contain the element.
* <p></p>
* More formally, returns the lowest index <tt>i</tt> such that
* <tt>(o==null ? get(i)==null : o.equals(get(i)))</tt>,
* or <tt>-1</tt> if there is no such index.
*
* @param target element to search for
* @return the index of the first occurrence of the specified element in this list,
* or <tt>-1</tt> if this list does not contain the element
*/
@Override
public int indexOf(Object target) {
Node<E> walker = head;
int index = -1;
int counter = 0;
while (walker != null && index == -1) {
if (target == null ? walker.value == null : target.equals(walker.value)) {
index = counter;
}
++counter;
walker = walker.next;
}
return index;
}
/**
* Returns the element at the specified position in this list.
*
* @param index index of the element to return
* @return the element at the specified position in this list
* @throws IndexOutOfBoundsException if the index is out of range
* (index<0 || index>=size())
*/
@Override
public E get(int index) {
if (index < 0) {
throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + size());
}
try {
Node<E> walker = head;
for (int i = 0; i < index; ++i) {
walker = walker.next;
}
return walker.value;
} catch (NullPointerException e) {
throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + size());
}
}
@Override
public E set(int index, E element) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean add(E element) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean remove(Object target) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public void add(int index, E element) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public E remove(int index) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public void clear() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean isEmpty() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public Iterator<E> iterator() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public Object[] toArray() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public <T> T[] toArray(T[] a) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean containsAll(Collection<?> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean addAll(Collection<? extends E> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean addAll(int index, Collection<? extends E> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean removeAll(Collection<?> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public boolean retainAll(Collection<?> c) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public int lastIndexOf(Object o) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public ListIterator<E> listIterator() {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public ListIterator<E> listIterator(int index) {
throw new UnsupportedOperationException("Not implemented");
}
@Override
public List<E> subList(int fromIndex, int toIndex) {
throw new UnsupportedOperationException("Not implemented");
}
}

218
Labs/Lab 6/src/barnestr/Tester.java Normal file
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/*
* CS2852
* Spring 2017
* Lab 6 - Recursion
* Name:
* Created: 3/30/2017
*/
package barnestr;
import javax.print.attribute.IntegerSyntax;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
/**
* Tests the ArrayList and LinkedList implementations for the
* CS2852 Lab 6 assignment.
*/
public class Tester {
private final static String[] EMPTY_STRINGS = {};
private final static String[] STRINGS1 = {"this"};
private final static String[] STRINGS2 = {"this", "will"};
private final static String[] STRINGS3 = {"this", "will", "be"};
private final static String[] STRINGS4 = {"this", "will", "be", "interesting"};
private final static String[] STRINGS5 = {"this", null, "will", "be", "interesting"};
private final static int[] EMPTY_INTS = {};
private final static int[] INTS1 = {-1};
private final static int[] INTS2 = {-1, 2};
private final static int[] INTS3 = {-1, 2, 8};
private final static int[] INTS4 = {-1, 2, 8, Integer.MAX_VALUE};
/**
* Calls all of the test methods
* @param ignored Not used
*/
public static void main(String[] ignored) {
String description = "ArrayList constructor collection of Strings of size: ";
test(description + 0, stringConstructor(EMPTY_STRINGS));
test(description + 1, stringConstructor(STRINGS1));
test(description + 2, stringConstructor(STRINGS2));
test(description + 3, stringConstructor(STRINGS3));
test(description + 4, stringConstructor(STRINGS4));
test(description + 5, stringConstructor(STRINGS5));
description = "ArrayList constructor collection of Integers of size: ";
test(description + 0, intConstructor(EMPTY_INTS));
test(description + 1, intConstructor(INTS1));
test(description + 2, intConstructor(INTS2));
test(description + 3, intConstructor(INTS3));
test(description + 4, intConstructor(INTS4));
description = "ArrayList contains method for ArrayList of Integers of size: ";
test(description + 0, arrayListContains(EMPTY_INTS));
test(description + 1, arrayListContains(INTS1));
test(description + 2, arrayListContains(INTS2));
test(description + 3, arrayListContains(INTS3));
test(description + 4, arrayListContains(INTS4));
description = "ArrayList indexOf method for ArrayList of Integers of size: ";
test(description + 0, arrayListIndexOf(EMPTY_INTS));
test(description + 1, arrayListIndexOf(INTS1));
test(description + 2, arrayListIndexOf(INTS2));
test(description + 3, arrayListIndexOf(INTS3));
test(description + 4, arrayListIndexOf(INTS4));
description = "LinkedList size method for LinkedList of Integers of size: ";
test(description + 0, linkedListSize(EMPTY_INTS));
test(description + 1, linkedListSize(INTS1));
test(description + 2, linkedListSize(INTS2));
test(description + 3, linkedListSize(INTS3));
test(description + 4, linkedListSize(INTS4));
description = "LinkedList contains method for LinkedList of Integers of size: ";
test(description + 0, linkedListContains(EMPTY_INTS));
test(description + 1, linkedListContains(INTS1));
test(description + 2, linkedListContains(INTS2));
test(description + 3, linkedListContains(INTS3));
test(description + 4, linkedListContains(INTS4));
description = "LinkedList indexOf method for LinkedList of Integers of size: ";
test(description + 0, linkedListIndexOf(EMPTY_INTS));
test(description + 1, linkedListIndexOf(INTS1));
test(description + 2, linkedListIndexOf(INTS2));
test(description + 3, linkedListIndexOf(INTS3));
test(description + 4, linkedListIndexOf(INTS4));
description = "LinkedList get method method for LinkedList of Integers of size: ";
test(description + 0, linkedListGet(EMPTY_INTS));
test(description + 1, linkedListGet(INTS1));
test(description + 2, linkedListGet(INTS2));
test(description + 3, linkedListGet(INTS3));
test(description + 4, linkedListGet(INTS4));
}
/**
* Displays an error if the test fails
* @param description Description of the test
* @param passed true if the test passed
*/
private static void test(String description, boolean passed) {
if(!passed) {
System.out.println("Test failed: " + description);
}
}
/**
* Tests the constructor that accepts a collection of elements.
* After the ArrayList is instantiated, the size is compared with
* the size of the collection.
* @param strings An array of Strings to be added to the ArrayList
* @return true if test passed
*/
private static boolean stringConstructor(String[] strings) {
Collection<String> input = new java.util.ArrayList<>();
for(String string : strings) {
input.add(string);
}
List<String> list = new ArrayList<>(input);
return list.size()==input.size();
}
/**
* Tests the constructor that accepts a collection of elements.
* After the ArrayList is instantiated, the size is compared with
* the size of the collection.
* @param numbers An array of ints to be added to the ArrayList
* @return true if test passed
*/
private static boolean intConstructor(int[] numbers) {
Collection<Integer> input = new java.util.ArrayList<>();
for(int number : numbers) {
input.add(number);
}
List<Integer> list = new ArrayList<>(input);
return list.size()==input.size();
}
private static boolean arrayListContains(int[] numbers) {
List<Integer> input = new java.util.ArrayList<>();
for (int num : numbers) {
input.add(num);
}
List<Integer> list = new ArrayList<>(input);
for (int i = 0; i < list.size(); i++) {
if (!(input.contains(input.get(i)) ||
list.contains(list.get(i)))) {
return false;
}
}
return true;
}
private static boolean arrayListIndexOf(int[] numbers) {
List<Integer> input = new java.util.ArrayList<>();
for (int num : numbers) {
input.add(num);
}
List<Integer> list = new barnestr.ArrayList<>(input);
for (int i = 0; i < list.size(); i++) {
return list.indexOf(list.get(i)) == input.indexOf(input.get(i));
}
return false;
}
private static boolean linkedListSize(int[] numbers) {
Collection<Integer> input = new java.util.LinkedList<>();
for (int num : numbers) {
input.add(num);
}
List<Integer> list = new LinkedList<>(input);
return list.size() == input.size();
}
private static boolean linkedListContains(int[] numbers) {
List<Integer> input = new java.util.LinkedList<>();
for (int num : numbers) {
input.add(num);
}
List<Integer> list = new LinkedList<>(input);
for (int i = 0; i < list.size(); i++) {
if (!(input.contains(input.get(i)) ||
list.contains(list.get(i)))) {
return false;
}
}
return true;
}
private static boolean linkedListIndexOf(int[] numbers) {
List<Integer> input = new java.util.LinkedList<>();
for (int num : numbers) {
input.add(num);
}
List<Integer> list = new LinkedList<>(input);
for (int i = 0; i < list.size(); i++) {
return list.indexOf(list.get(i)) == input.indexOf(input.get(i));
}
return false;
}
private static boolean linkedListGet(int[] numbers) {
java.util.LinkedList<Integer> input = new java.util.LinkedList<>();
for (int num : numbers) {
input.add(num);
}
List<Integer> list = new LinkedList<>(input);
for (int i = 0; i < list.size(); i++) {
if (input.get(i) != list.get(i)) {
return false;
}
}
return false;
}
}

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