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import java.util.*;
public class node {
private int id = -1;
private static int nextId = 101;
public void init() {
this.id = nextId;
nextId++;
}
ArrayList connectedNodes;
public node() {
init();
this.connectedNodes = new ArrayList(0);
}
public node(node n) {
init();
this.connectedNodes = new ArrayList(1);
this.connectedNodes.add(n);
}
public void connect(node n) {
this.connectedNodes.add(n);
}
public ArrayList getChildNodes(){
return this.connectedNodes;
}
public int graphId;
public void setId(int id) {
this.graphId = id;
}
public node setid(int id) {
this.graphId = id;
return this;
}
public int getId() {
return this.graphId;
}
public int getUniqueId() {
return this.id;
}
/* Diff mode settings
* 0 - compare by id
* 1 - compare by unique id
* 2 - Compare by connected nodes
*/
public static int diffmode = 0;
@Override
public boolean equals(Object obj) {
if(obj instanceof node) {
node e = (node) obj;
if(diffmode == 0) {
return (this.getId() == e.getId());
}else if(diffmode == 1) {
return (this.getUniqueId() == e.getUniqueId());
}else if(diffmode == 2) {
return (this.connectedNodes.equals(e.connectedNodes));
}
}else {
return false;
}
return false;
}
public void linkNode(node n) {
this.connectedNodes.add(n);
}
public node addChild(node n) {
this.linkNode(n);
return this;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("node(");
sb.append("id = ");
sb.append(this.graphId);
sb.append(", uniqueId = ");
sb.append(this.getUniqueId());
sb.append(", children = ");
sb.append(this.connectedNodes.toString());
sb.append(" )");
return sb.toString();
}
private boolean visited;
public void reset() {
this.visited = false;
}
public void visit() {
this.visited = true;
}
public boolean isvisited() {
return this.visited;
}
public static void main(String[] args) {
// TODO Auto-generated method stub
node.diffmode = 0;
System.out.println((new node()).addChild(new node()));
}
}