45 lines
731 B
Java
45 lines
731 B
Java
public class SimpleList{
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private class Node{
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public Object elem;
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public Node next;
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}
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public SimpleList(){
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node=null;
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len=0;
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}
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public boolean isEmpty(){
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return node==null;
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}
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public int size(){
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return len;
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}
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public Object head(){
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if(node==null)
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return null;
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else
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return node.elem;
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}
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public void addHead(Object nuovo){
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Node tmp=new Node();
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tmp.elem=nuovo;
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tmp.next=node;
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node=tmp;
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len++;
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}
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public void remHead(){
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if(node!=null){
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node=node.next;
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len--;
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}
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}
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private Node node;
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private int len;
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} |