verbesserung durch jessi
parent
2e1c84a212
commit
7eb050d9d3
80
List.java
80
List.java
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@ -5,59 +5,97 @@
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* @author (Ihr Name)
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* @author (Ihr Name)
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* @version (eine Versionsnummer oder ein Datum)
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* @version (eine Versionsnummer oder ein Datum)
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*/
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*/
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public class List<T>
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public class List<T>
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{
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{
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private Node<T> first;
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private Node<T> first;
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public List(){ //leere liste soll erzeugt werden, wert wird zugedingst
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public List() {
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first = null;
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first = null;
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}
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}
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public boolean isEmpty(){
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if (first == null)return true;
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public boolean isEmpty() {
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if (first == null) return true;
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return false;
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return false;
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}
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}
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public int size(){
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public int size() {
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Node<T> current = first;
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Node<T> current = first;
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int count = 0;
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int count = 0;
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while (current != null){
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while (current != null) {
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count++;
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count++;
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current = current.next;
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current = current.next;
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}
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}
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return count;
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return count;
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}
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}
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public T get(int n){
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public T get(int n) {
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Node<T> current = first;
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Node<T> current = first;
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for(int i = 0; i<n; i++){
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for (int i = 0; i < n; i++) {
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if (current == null) return null;
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if (current == null) return null;
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current = current.next;
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current = current.next;
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}
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}
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if (current == null) return null;
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if (current == null) return null;
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return current.wert;
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return current.wert;
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}
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}
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public void add(T val){
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public void add(T val) {
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Node<T> neu = new Node<T>();
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Node<T> neu = new Node<T>();
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neu.wert = val;
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neu.wert = val;
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if (first ==null){
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if (first == null) {
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first = neu;
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first = neu;
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}else{
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} else {
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Node<T> current = first;
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Node<T> current = first;
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while (current.next !=null){
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while (current.next != null) {
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current = current.next;
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current = current.next;
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}
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}
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current.next = neu;
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current.next = neu;
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}
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}
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}
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}
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public void add(int n, T val){
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Node<T> added
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public void add(int n, T val) {
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}
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if (n>= size()){ //überprüfung am anfang wenn n >= ist wie die länge, also zahlen die zu lang sind
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public boolean contains(T val){
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add(val); //wenn n zu groß dann hänge am ende an...
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Node<T> current = first;
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return; // und beende die Methode
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while (current != null){
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if (current.wert.equals(val)) return true;
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}
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}
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return false;
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}
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Node<T> neu = new Node <T>();
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public T remove(int n){
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neu.wert = val;
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if (n == 0){ // Wenn Nachfolger an stelle 0 einfügen möchte dann
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neu.next = first;// Nachfolger auf bisher ersten(first) setzten
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first = neu;// Neuer Eintrag ist der neue Erste(first)
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return; //beenden
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}
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Node<T> current = first;
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for (int i = 0; i < n-1; i++){
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current = current.next;
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}
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neu.next =current.next;
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current.next = neu;
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}
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}
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public boolean contains(T val) {
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Node<T> current = first;
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while (current != null) {
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if (current.wert.equals(val)) return true;
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}
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return false;
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}
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public T remove(int n) {
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return null; //Platzhalter
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}
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}
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}
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26
Node.java
26
Node.java
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@ -5,17 +5,19 @@
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* @author (Ihr Name)
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* @author (Ihr Name)
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* @version (eine Versionsnummer oder ein Datum)
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* @version (eine Versionsnummer oder ein Datum)
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*/
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*/
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public class Node<T>
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public class Node<T> //T für Typ und die Variable die wir hsben möchten (also int,string,...)
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{
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{
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public T wert;
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public T wert;
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public Node next;
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public Node<T> next;
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public Node(T w){
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this.wert = w;
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}
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public void setWert(T w){ //statt int T damit es allgemeiner ist
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public void setWert(T w){
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this.wert = w;
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this.wert = w;
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}
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}
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public void setNext(Node n){
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this.next = n;
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public void setNext(Node n){
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}
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this.next = n;
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}
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}
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}
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