Finish lab 10: Lists

This commit is contained in:
Rémi Heredero 2022-03-02 11:15:53 +01:00
parent b2ddd0b8f9
commit 64a05245d6
31 changed files with 966 additions and 5 deletions

View File

@ -4,4 +4,6 @@
"java.project.referencedLibraries": [
"lib/**/*.jar"
]
}

Binary file not shown.

Binary file not shown.

BIN
bin/lab10_lists/App.class Normal file

Binary file not shown.

Binary file not shown.

Binary file not shown.

Binary file not shown.

Binary file not shown.

BIN
bin/lab10_lists/Node.class Normal file

Binary file not shown.

Binary file not shown.

Binary file not shown.

Binary file not shown.

Binary file not shown.

Binary file not shown.

Binary file not shown.

Binary file not shown.

BIN
lib/junit.jar Normal file

Binary file not shown.

View File

@ -1,5 +0,0 @@
public class App {
public static void main(String[] args) throws Exception {
System.out.println("Hello, World!");
}
}

Binary file not shown.

32
src/lab10_lists/App.java Normal file
View File

@ -0,0 +1,32 @@
package lab10_lists;
import java.util.Vector;
public class App {
public static void main(String[] args) throws Exception {
// 1
Vector<String> v = new Vector<>();
v.add("Louis");
v.add("Paul");
v.add("Henri");
v.add("Pascal");
// 2
System.out.println("2: " + v.toString());
// 3
System.out.print("3: ");
if(v.contains("Paul")){
System.out.println("Paul is on this list");
} else {
System.out.println("Paul is not on this list");
}
// 4
v.remove("Paul");
// 5
System.out.println("5: " + v.toString());
}
}

View File

@ -0,0 +1,179 @@
package lab10_lists;
public class LinkedList {
// Task 2
public Node head;
public Node tail;
public LinkedList(){
this.head = null;
}
public void addToStart(String s){
Node n = new Node(s, head);
head = n;
}
public int getSize(){
Node foo = head;
int n = 0;
while (foo != null) {
n++;
foo = foo.next;
}
return n;
}
public String toString(){
Node foo;
if( this.head == null){
foo = new Node(null, null);
} else {
foo = new Node(head);
}
String s = "";
s += "List content (size " + this.getSize() + ") : ";
for (int i = 0; i <= this.getSize(); i++) {
if (i>0) {
s += " -> ";
}
if(foo == null){
s += "null";
} else {
s += foo.item;
foo = foo.next;
}
}
return s;
}
// Task 3
public void removeFirstElement(){
if(head == null) return;
Node foo = new Node(head);
this.head = foo.next;
}
public Node getLastElement(){
if(head == null) return null;
Node tailNode = head;
while (tailNode.next != null) {
tailNode = tailNode.next;
}
return tailNode;
}
public void addToEnd(String element){
Node newNode = new Node(element);
if(head == null) {
head = newNode;
tail = newNode;
}
else {
tail.next = newNode;
tail = newNode;
}
}
public boolean isPresent(String e){
if(head == null) return false;
boolean present = false;
Node foo = new Node(head);
while (foo != null) {
if (foo.item.equals(e)) {present = true;}
foo = foo.next;
}
return present;
}
// Task 4
public Node findElement(String s){
if(head == null) return null;
Node tailNode = head;
while (tailNode != null) {
if(tailNode.item.equals(s)) return tailNode;
tailNode = tailNode.next;
}
return null;
}
public void swapElements(String e1, String e2){
Node n1 = findElement(e1);
Node n2 = findElement(e2);
if(n1!=null && n2!=null){
n1.item = e2;
n2.item = e1;
}
}
public void removeLastElement(){
if (head == null) return;
if (head.next == null) {
head = null;
return;
}
Node n = head;
while (n.next.next != null) {
n = n.next;
}
n.next = null;
}
public void removeElement(String e){
Node n = head;
Node prev = null;
if (n != null && n.item.equals(e)) {
head = n.next; // Changed head
return;
}
while (n != null && !n.item.equals(e)) {
prev = n;
n = n.next;
}
if (n == null) return;
prev.next = n.next;
}
public void insertAfter(String before, String after){
if(head == null) return;
if(before == null) return;
if(after == null) return;
Node prevNode = findElement(before);
if(prevNode == null) return;
Node newNode = new Node(after, prevNode.next);
prevNode.next = newNode;
}
public static void main(String[] args) {
LinkedList flightList = new LinkedList();
System.out.println(flightList);
flightList.addToEnd("Bonn");
System.out.println(flightList);
flightList.addToEnd("Zurich");
System.out.println(flightList);
flightList.addToEnd("Rome");
System.out.println(flightList);
System.out.println(flightList);
flightList.removeFirstElement();
System.out.println(flightList);
flightList.addToEnd("London");
System.out.println(flightList);
flightList.swapElements("Rome", "London");
System.out.println(flightList);
flightList.removeLastElement();
System.out.println(flightList);
flightList.removeLastElement();
System.out.println(flightList);
flightList.removeLastElement();
System.out.println(flightList);
flightList.removeLastElement();
System.out.println(flightList);
}
}

View File

@ -0,0 +1,312 @@
package lab10_lists;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
/**
* JUnit 5 regression tests for LinkedList laboratory
* @author Marc Pignat
* @author P.-A. Mudry
*/
@DisplayName("In this lab, a linked list that you have implemented")
class LinkedListTest {
@Nested
@DisplayName("Has some basic operations that must work - Task 2")
class Task2_Basic_Operations {
@DisplayName("The constructor must create an instance correctly")
@Test
void test_constructor() {
LinkedList n = new LinkedList();
assertEquals(null, n.head, "head should be null after calling the constructor");
}
@DisplayName("The size of the list should be reported correctly")
@Test
void test_getSize() {
LinkedList n = new LinkedList();
assertEquals(0, n.getSize(), "list is empty, getSize() MUST return 0");
n.addToStart("a");
assertEquals(1, n.getSize(), "list of 1 getSize() MUST return 1");
n.addToStart("b");
assertEquals(2, n.getSize(), "list of 2 getSize() MUST return 2");
}
@DisplayName("The toString method should be implemented")
@Test
void test_toStringImplemented() {
LinkedList n = new LinkedList();
String defaultToString = n.getClass().getName() + "@" + Integer.toHexString(System.identityHashCode(n));
assertNotEquals(n.toString(), defaultToString, "toString() MUST be implemented");
}
@DisplayName("The toString method should report the list elements correctly")
@Test
void test_toString() {
LinkedList n = new LinkedList();
assertTrue(n.toString().contains("0"), "toString is expected to show the list size (0)");
n.addToStart("Roma");
assertTrue(n.toString().contains("Roma"), "toString is expected to show the element (here 'Roma')");
assertTrue(n.toString().contains("1"), "toString is expected to show the list size (1)");
n.addToStart("Geneva");
assertTrue(n.toString().contains("Roma"), "toString is expected to show the element (here 'Roma')");
assertTrue(n.toString().contains("Geneva"), "toString is expected to show the element (here 'Geneva')");
assertTrue(n.toString().indexOf("Geneva") < n.toString().indexOf("Roma"),
"toString is expected to show 'Geneva' before 'Roma'");
assertTrue(n.toString().contains("2"), "toString is expected to show the list size (2)");
}
}
@Nested
@DisplayName("Has a correct implementation of insertion and removal operators - Task 3")
class Task3_Operations {
@DisplayName("Remove first element works")
@Test
void testRemoveFirstElement() {
LinkedList n = new LinkedList();
n.addToStart("Cathy");
n.addToStart("Bob");
n.addToStart("Alice");
n.removeFirstElement();
assertEquals(2, n.getSize(), "size MUST be 2 after removing an element from a 3 element list");
assertEquals("Bob", n.head.item, "first element must be 'Bob'");
n.removeFirstElement();
assertEquals(1, n.getSize(), "size MUST be 1 after removing an element from a 2 element list");
assertEquals("Cathy", n.head.item, "first element must be 'Cathy'");
n.removeFirstElement();
assertEquals(0, n.getSize(), "size MUST be 0 after removing an element from a 1 element list");
assertEquals(null, n.head, "Head must be null");
n.removeFirstElement();
assertEquals(0, n.getSize(), "size MUST be 0 after removing an element from a 0 element list");
assertEquals(null, n.head, "Head must be null");
}
@DisplayName("Getting the last element works")
@Test
void testGetLastElement1() {
LinkedList n = new LinkedList();
assertEquals(null, n.getLastElement(), "last element must be null");
n.addToStart("Cathy");
n.addToStart("Bob");
n.addToStart("Alice");
assertEquals("Cathy", n.getLastElement().item, "last element must be 'Cathy'");
assertEquals(3, n.getSize(), "size MUST be 3 (getLastElement MUST not remove the element)");
}
@DisplayName("Adding an element at the end works")
@Test
void testAddToEnd() {
LinkedList n = new LinkedList();
n.addToEnd("Alice");
assertEquals("Alice", n.getLastElement().item, "last element must be 'Alice'");
n.addToEnd("Bob");
assertEquals("Bob", n.getLastElement().item, "last element must be 'Bob'");
n.addToEnd("Cathy");
assertEquals("Cathy", n.getLastElement().item, "last element must be 'Cathy'");
}
@DisplayName("Must be able to find elements correctly")
@Test
void testIsPresent() {
LinkedList n = new LinkedList();
assertFalse(n.isPresent("Alice"), "'Alice' MUST not be in the empty list");
assertFalse(n.isPresent("Bob"), "'Bob' MUST not be in the empty list");
assertFalse(n.isPresent("Cathy"), "'Cathy' MUST not be in the empty list");
n.addToEnd("Bob");
assertFalse(n.isPresent("Alice"), "'Alice' MUST not be in this list");
assertTrue(n.isPresent("Bob"), "'Bob' MUST be in this list");
assertFalse(n.isPresent("Cathy"), "'Cathy' MUST not be in this list");
n.addToEnd("Cathy");
assertFalse(n.isPresent("Alice"), "'Alice' MUST not be in this list");
assertTrue(n.isPresent("Bob"), "'Bob' MUST be in this list");
assertTrue(n.isPresent("Cathy"), "'Cathy' MUST be in this list");
n.addToStart("Alice");
assertTrue(n.isPresent("Alice"), "'Alice' MUST be in this list");
assertTrue(n.isPresent("Bob"), "'Bob' MUST be in this list");
assertTrue(n.isPresent("Cathy"), "'Cathy' MUST be in this list");
n.removeFirstElement();
assertFalse(n.isPresent("Alice"), "'Alice' MUST not be in this list");
assertTrue(n.isPresent("Bob"), "'Bob' MUST be in this list");
assertTrue(n.isPresent("Cathy"), "'Cathy' MUST be in this list");
n.removeFirstElement();
assertFalse(n.isPresent("Alice"), "'Alice' MUST not be in this list");
assertFalse(n.isPresent("Bob"), "'Bob' MUST not be in this list");
assertTrue(n.isPresent("Cathy"), "'Cathy' MUST be in this list");
n.removeFirstElement();
assertFalse(n.isPresent("Alice"), "'Alice' MUST not be in the empty list");
assertFalse(n.isPresent("Bob"), "'Bob' MUST not be in the empty list");
assertFalse(n.isPresent("Cathy"), "'Cathy' MUST not be in the empty list");
}
}
@Nested
@DisplayName("Has a correct implementation complex operators - Task 4")
class Task4_Operations {
@Test
@DisplayName("Can find elements")
void testFindElement() {
LinkedList n = new LinkedList();
assertEquals(null, n.findElement("Alice"), "'Alice' MUST not be in empty list");
n.addToEnd("Alice");
assertEquals(n.head, n.findElement("Alice"), "'Alice' MUST be the head element");
assertEquals(n.getLastElement(), n.findElement("Alice"), "'Alice' MUST be the end element");
n.addToEnd("Bob");
assertEquals(n.getLastElement(), n.findElement("Bob"), "'Bob' MUST be the end element");
assertNotEquals(null, n.findElement("Alice"), "'Alice' MUST be in the list");
n.addToEnd("Cathy");
assertNotEquals(null, n.findElement("Alice"), "'Alice' MUST be in the list");
assertNotEquals(null, n.findElement("Bob"), "'Bob' MUST be in the list");
assertEquals(n.getLastElement(), n.findElement("Cathy"), "'Cathy' MUST be the end element");
}
@Test
@DisplayName("Can swap elements")
void testSwapElements() {
LinkedList n = new LinkedList();
n.addToEnd("Cathy");
n.addToEnd("Bob");
n.addToEnd("Alice");
n.swapElements("Alice", "Bob");
assertEquals("Bob", n.getLastElement().item, "'Bob' MUST be the last element");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Cathy", "Alice");
assertEquals(n.head, n.findElement("Alice"), "'Alice' MUST be the head element");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Cathy", "Bob");
assertEquals("Cathy", n.getLastElement().item, "'Cathy' MUST be the last element");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Alice", "Dan");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Dan", "Dan");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Bob", "Dan");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Dan", "Bob");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Alice", null);
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Bob", null);
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Cathy", null);
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements("Dan", null);
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements(null, "Alice");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements(null, "Bob");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements(null, "Cathy");
assertEquals(3, n.getSize(), "size MUST not have changed after swap");
n.swapElements(null, "Dan");
n = new LinkedList();
n.swapElements("Alice", "Bob");
assertEquals(0, n.getSize(), "size MUST not have changed after swap");
}
@Test
void testRemoveLastElement() {
LinkedList n = new LinkedList();
n.addToEnd("Alice");
n.addToEnd("Bob");
n.addToEnd("Cathy");
n.removeLastElement();
assertEquals(2, n.getSize(), "size MUST be 2");
assertEquals(null, n.findElement("Cathy"), "'Cathy' MUST not be in this list");
assertNotEquals(null, n.findElement("Alice"), "'Alice' MUST be in this list");
assertNotEquals(null, n.findElement("Bob"), "'Bob' MUST be in this list");
n.removeLastElement();
assertEquals(1, n.getSize(), "size MUST be 1");
assertEquals(null, n.findElement("Bob"), "'Bob' MUST not be in this list");
assertNotEquals(null, n.findElement("Alice"), "'Alice' MUST be in this list");
n.removeLastElement();
assertEquals(0, n.getSize(), "size MUST be 0");
assertEquals(null, n.findElement("Alice"), "'Alice' MUST not be in this list");
n.removeLastElement();
assertEquals(0, n.getSize(), "size MUST be 0");
n = new LinkedList();
n.removeLastElement();
assertEquals(0, n.getSize(), "size MUST be 0");
}
@Test
@DisplayName("Can remove elements")
void testRemoveElement() {
LinkedList n = new LinkedList();
n.addToEnd("Alice");
n.addToEnd("Bob");
n.addToEnd("Cathy");
n.removeElement("Alice");
assertEquals(2, n.getSize(), "size MUST be 2");
assertEquals(n.head, n.findElement("Bob"), "'Bob' MUST be head");
assertEquals(null, n.findElement("Alice"), "'Alice' MUST not be in this list");
assertEquals("Cathy", n.getLastElement().item, "'Cathy' MUST be at the end");
n.addToStart("Alice");
n.removeElement("Bob");
assertEquals(2, n.getSize(), "size MUST be 2");
assertEquals(null, n.findElement("Bob"), "'Bob' MUST not be in this list");
assertEquals("Cathy", n.getLastElement().item, "'Cathy' MUST be at the end");
n = new LinkedList();
n.addToEnd("Alice");
n.addToEnd("Bob");
n.addToEnd("Cathy");
n.removeElement("Cathy");
assertEquals(2, n.getSize(), "size MUST be 2");
assertEquals(null, n.findElement("Cathy"), "'Bob' MUST not be in this list");
assertEquals("Bob", n.getLastElement().item, "'Bob' MUST be at the end");
n.removeElement("Dan");
n = new LinkedList();
n.removeElement("Dan");
n.addToEnd("Alice");
n.removeElement("Alice");
assertEquals(0, n.getSize(), "size MUST be 0");
assertEquals(null, n.findElement("Alice"), "'Alice' MUST not be in this list");
n.removeElement("Alice");
assertEquals(0, n.getSize(), "size MUST be 0");
assertEquals(null, n.findElement("Alice"), "'Alice' MUST not be in this list");
}
@Test
@DisplayName("Can insert an element after another")
void testInsertAfter() {
LinkedList n = new LinkedList();
n.addToEnd("Alice");
n.insertAfter("Alice", "Cathy");
assertEquals(2, n.getSize(), "size MUST be 2");
assertEquals(n.head, n.findElement("Alice"), "'Alice' MUST be head");
assertEquals("Cathy", n.getLastElement().item, "'Cathy' MUST be at the end");
n.insertAfter("Alice", "Bob");
assertEquals(3, n.getSize(), "size MUST be 3");
assertEquals("Cathy", n.getLastElement().item, "'Cathy' MUST be at the end");
n.insertAfter("Cathy", "Dan");
assertEquals(4, n.getSize(), "size MUST be 4");
assertEquals("Dan", n.getLastElement().item, "'Dan' MUST be at the end");
n.insertAfter("Erin", "Frank");
assertEquals(4, n.getSize(), "size MUST be 4");
assertEquals("Dan", n.getLastElement().item, "'Dan' MUST be at the end");
assertFalse(n.isPresent("Erin"), "'Erin' MUST not be in the list");
assertFalse(n.isPresent("Frank"), "'Frank' MUST not be in the list");
n.insertAfter("Frank", null);
assertEquals(4, n.getSize(), "size MUST be 4");
assertEquals("Dan", n.getLastElement().item, "'Dan' MUST be at the end");
assertFalse(n.isPresent("Frank"), "'Frank' MUST not be in the list");
n.insertAfter(null, "Frank");
assertEquals(4, n.getSize(), "size MUST be 4");
assertEquals("Dan", n.getLastElement().item, "'Dan' MUST be at the end");
assertFalse(n.isPresent("Frank"), "'Frank' MUST not be in the list");
}
}
}

19
src/lab10_lists/Node.java Normal file
View File

@ -0,0 +1,19 @@
package lab10_lists;
public class Node {
String item;
Node next;
Node(String item, Node next){
this.item = item;
this.next = next;
}
Node(Node node){
this.item = node.item;
this.next = node.next;
}
Node(String item){
this.item = item;
this.next = null;
}
}

Binary file not shown.

View File

@ -0,0 +1,158 @@
package lab11_debugging;
/**
* Class used to compare resources consumption between different data structures
*
* @author Pierre Roduit (pierre.roduit@hevs.ch)
* @author Pierre-André Mudry (pandre.mudry@hevs.ch)
* @version 1.2
*
*/
public class DynamicStructuresComparison {
private SampleArray tstArray;
private SampleVector tstVector;
private SampleLinkedList tstList;
private int size;
/**
* Constructor. Produce the three data structures
*
* @param inputArray
*/
public DynamicStructuresComparison(int[] inputArray) {
tstArray = new SampleArray(inputArray);
tstVector = new SampleVector(inputArray);
tstList = new SampleLinkedList(inputArray);
// Define the position of insertion for the tests
size = inputArray.length;
}
/**
* Compare the difference between the data structures for the insertions
*
* @param nTimes
* Number of times the test is repeated
*/
public void testInsertion(int nTimes, int position) {
long start, end;
System.out.println("Insertion test with " + nTimes
+ " insertions and an array size of " + size + " elements.");
// Measure insertion with array
start = System.nanoTime();
this.repeatInsertArray(nTimes, position);
end = System.nanoTime();
System.out.println("Array insertion took : \t" + ((end- start)/1000.0) + " uS");
// Measure insertion with vector
start = System.nanoTime();
this.repeatInsertVector(nTimes, position);
end = System.nanoTime();
System.out.println("Vector insertion took: \t" + ((end - start)/1000.0) + " uS");
// Measure insertion with list
start = System.nanoTime();
this.repeatInsertList(nTimes, position);
end = System.nanoTime();
System.out.println("List insertion took : \t" + ((end - start)/1000.0) + " uS");
}
/**
* Compare the difference between the data structures for access
*
* @param nTimes
* Number of times the test is repeated
*/
public void testAccess(int nTimes, int position) {
long start, end;
System.out.println("Access test of the whole data with " + nTimes
+ " repetitions and an array size of " + size + " elements.");
// Measure insertion with array
start = System.nanoTime();
this.repeatAccessArray(nTimes, position);
end = System.nanoTime();
System.out.println("Array access took : \t\t" + ((end- start)/1000) + " uS");
// Measure insertion with list
start = System.nanoTime();
this.repeatAccessVector(nTimes, position);
end = System.nanoTime();
System.out.println("Vector access took : \t\t" + ((end- start)/1000) + " uS");
// Measure insertion with list
start = System.nanoTime();
this.repeatAccessList(nTimes, position);
end = System.nanoTime();
System.out.println("List access took : \t\t" + ((end- start)/1000) + " uS");
}
/**
* Make a specific number of insertions
*
* @param number
*/
private void repeatInsertArray(int repetitions, int position) {
for (int i = 0; i < repetitions; i++) {
tstArray.insertZero(position);
}
}
/**
* Make a specific number of insertions
*
* @param number
*/
private void repeatInsertVector(int repetitions, int position) {
for (int i = 0; i < repetitions; i++) {
tstVector.insertZero(position);
}
}
/**
* Make a specific number of insertions
*
* @param number
*/
private void repeatInsertList(int repetitions, int position) {
for (int i = 0; i < repetitions; i++) {
tstList.insertZero(position);
}
}
/**
* Make a specific number of access to the whole data
*
* @param number
*/
private void repeatAccessArray(int repetitions, int position){
for (int i = 0; i < repetitions; i++) {
tstArray.increment(position);
}
}
/**
* Make a specific number of access to the whole data
*
* @param number
*/
private void repeatAccessVector(int repetitions, int position){
for (int i = 0; i < repetitions; i++) {
tstVector.increment(position);
}
}
/**
* Make a specific number of access to the whole data
*
* @param number
*/
private void repeatAccessList(int repetitions, int position){
for (int i = 0; i < repetitions; i++) {
tstList.increment(position);
}
}
}

View File

@ -0,0 +1,47 @@
package lab11_debugging;
import java.util.Random;
/**
* Class to run the test
*
* @author Pierre Roduit (pierre.roduit@hevs.ch)
* @author Pierre-André Mudry (pandre.mudry@hevs.ch)
* @version 1.2
*
*/
public class Launcher {
static final boolean TEST_ACCESS = false;
static final boolean TEST_INSERTION = true;
public static void main(String[] args) {
// Create a random array and create its perfect equivalent with a Vector or a list
final int size = 500000;
final int position = 0;
final int nTimes = 1000;
int[] randomArray = createRandomArray(size, 10);
DynamicStructuresComparison test = new DynamicStructuresComparison(randomArray);
if(TEST_ACCESS)
test.testAccess(nTimes, position);
if(TEST_INSERTION)
test.testInsertion(nTimes, position);
}
/**
* Creates a random array
*
* @param size
* @param maxValue
* @return
*/
static int[] createRandomArray(int size, int maxValue) {
int[] result = new int[size];
Random randomizer = new Random();
for (int i = 0; i < size; i++) {
result[i] = randomizer.nextInt(maxValue);
}
return result;
}
}

View File

@ -0,0 +1,66 @@
package lab11_debugging;
import java.util.Random;
/**
* Class to try the debugger
*
* @author Pierre Roduit (pierre.roduit@hevs.ch)
* @author PA Mudry (pierre-andre.mudry@hevs.ch)
* @version 1.1
*
*/
public class NumberAnalyzer {
public static void main(String[] args) {
int[] array = createRandomArray(100, 100);
displayArray(array);
int position = firstRepeatedNumber(array);
System.out.println("The first repeated element is at location " + position);
}
/**
* Function search for the first element repeated in the vector. It returns
* the position of this duplicated element.
*
* @param inputArray The input array
* @return The position of the first repeated element
*/
public static int firstRepeatedNumber(int[] inputArray) {
for (int i = 0; i < inputArray.length; i++) {
if (inputArray[i] == inputArray[i + 1])
return i;
}
return -1;
}
/**
* Create a random array
*
* @param size
* Number of element of the array produced
* @param maxValue
* Maximal value of the generated elements
* @return The generated array
*/
static int[] createRandomArray(int size, int maxValue) {
int[] result = new int[size];
Random randomizer = new Random();
for (int i = 0; i < size; i++) {
result[i] = randomizer.nextInt(maxValue);
}
return result;
}
/**
* Display the array
*
* @param array
* The array to display
*/
static void displayArray(int[] array) {
for (int i = 0; i < array.length; i++) {
System.out.print(array[i] + ",");
}
System.out.println();
}
}

View File

@ -0,0 +1,54 @@
package lab11_debugging;
/**
* Class to test efficiency of arrays
*
* @author Pierre Roduit (pierre.roduit@hevs.ch)
* @author Pierre-André Mudry
* @version 1.2
*
*/
public class SampleArray {
/**
* Stored values
*/
int[] data;
/**
* Constructor
*/
SampleArray(int[] inputArray) {
data = inputArray.clone();
}
/**
* Increment an element by one
*/
void increment(int position) {
if(position < data.length)
data[position]++;
}
/**
* Insert a zero at the specified position
*
* @param position
* @return
*/
void insertZero(int position) {
int[] tmpArray;
tmpArray = new int[data.length + 1];
// Copy the elements till position
for (int i = 0; i < position; i++) {
tmpArray[i] = data[i];
}
// Move all the other element one position on the right
for (int i = position; i < data.length; i++) {
tmpArray[i + 1] = data[i];
}
// Insert a zero at position
tmpArray[position] = 0;
data = tmpArray;
}
}

View File

@ -0,0 +1,48 @@
package lab11_debugging;
import java.util.LinkedList;
import java.util.ListIterator;
/**
* Class to test efficiency of Linked Lists
*
* @author Pierre Roduit (pierre.roduit@hevs.ch)
* @author Pierre-André Mudry (pandre.mudry@hevs.ch)
* @version 1.2 (mui) - Changed incrementAll with iterator
*
*/
public class SampleLinkedList {
/**
* Stored values
*/
LinkedList<Integer> data;
/**
* Constructor
*
* @param inputArray
*/
public SampleLinkedList(int[] inputArray) {
data = new LinkedList<Integer>();
// TODO Add your code here
}
/**
* Increment an element by one
*/
public void increment(int position) {
// TODO Add your code here
}
/**
* Insert a zero at the specified position
*
* @param position
*/
public void insertZero(int position) {
// TODO Add your code here
}
}

View File

@ -0,0 +1,49 @@
package lab11_debugging;
import java.util.Vector;
/**
* Class to test efficiency of Vectors
*
* @author Pierre Roduit (pierre.roduit@hevs.ch)
* @author Pierre-André Mudry (pandre.mudry@hevs.ch)
* @version 1.2 (mui) - In {@link #insertZero(int)}, changed insertElementAt with add
*
*/
public class SampleVector {
/**
* Stored values
*/
Vector<Integer> data;
/**
* Constructor
*
* @param inputArray
*/
SampleVector(int[] inputArray) {
data = new Vector<Integer>();
// TODO Complete this
}
/**
* Increment an element by one
*
* @return
*/
void increment(int position) {
// TODO Complete this
}
/**
* Insert a zero at the specified position
*
* @param position
* @return
*/
void insertZero(int position) {
// TODO Complete this
}
}