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2 changes: 2 additions & 0 deletions .idea/compiler.xml

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20 changes: 20 additions & 0 deletions .idea/jarRepositories.xml

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13 changes: 13 additions & 0 deletions .idea/libraries/Maven__junit_junit_4_12.xml

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13 changes: 13 additions & 0 deletions .idea/libraries/Maven__org_hamcrest_hamcrest_core_1_3.xml

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1 change: 1 addition & 0 deletions .idea/modules.xml

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414 changes: 153 additions & 261 deletions .idea/workspace.xml

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14 changes: 14 additions & 0 deletions pom.xml
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,20 @@
<groupId>com.zipcodewilmington</groupId>
<artifactId>singlylinkedlist</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>


</project>
Original file line number Diff line number Diff line change
Expand Up @@ -3,5 +3,148 @@
/**
* Created by leon on 1/10/18.
*/
public class SinglyLinkedList {
public class SinglyLinkedList<T extends Comparable<T>> {


class Node{
T data;
Node next;

public Node(T data){
this.data = data;
this.next = null;
}
}

public Node head = null;
public Node tail = null;

public void add(T data) {
Node newNode = new Node(data);
if(head == null) {
head = newNode;
} else {
tail.next = newNode;
}
tail = newNode;
}

public int size() {
Node temp = head;
int count = 0;
while(temp != null) {
count++;
temp = temp.next;
}
return count;
}

public Integer find(T data) {
Node temp = head;
for(int i = 0; i < size(); i++) {
if(!temp.data.equals(data)) {
temp = temp.next;
} else return i;
}
return -1;
}

public boolean contains(T data) {
Node current = head;
while (current != null) {
if(current.data == data) {
return true;
}
current = current.next;
}
return false;
}

public void remove(Integer index) {
Node current = head;
Node last = head;
for (int i = 0; i < size(); i++) {
if(i != index) {
last = current;
current = current.next;
} else {
while(i < size() - 1) {
last.next = current.next;
}
}
}
}

public T get(Integer index) {
Node temp = head;
for(int i = 0; i < size(); i++) {
if(i == index) {
return temp.data;
} else temp = temp.next;
}
return null;
}


public SinglyLinkedList<T> copy() {
SinglyLinkedList<T> newList = new SinglyLinkedList<T>();
Node temp = head;
while(temp != null) {
newList.add(temp.data);
temp = temp.next;
}
return newList;
}

public void sort() {
Node current = head;

for(int i = 0; i < size(); i++) {
current = head;
while(current.next != null) {
if(current.data.compareTo(current.next.data) > 0) {
T temp = current.next.data;
current.next.data = current.data;
current.data = temp;
}
current = current.next;
}
}
}

public void reverse() {
Node original = head;
Node previous = null;
Node current = null;

while(original != null) {
current = original;
original = original.next;

current.next = previous;
previous = current;
head = current;
}
}

public SinglyLinkedList<T> slice(Integer startIndex, Integer endIndex) {
SinglyLinkedList<T> slicedList = new SinglyLinkedList<T>();

for(int i = 0; i <= endIndex; i++) {
if(i >= startIndex) {
slicedList.add(get(i));
}
}
return slicedList;
}

public void display() {
Node current = head;
//checkListEmpty("There's no list, idiot.");
System.out.println("Nodes of singly linked list:");
while (current != null) {
System.out.println(current.data + "");
current = current.next;
}
}
}
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