тема19

import java.util.ArrayList;
import java.util.List;

public class tree<T> {
    private T data=null;
    private List <tree<T>> children=new ArrayList<>();
    private tree<T> parent=null;
    public tree(T data) {
        this.data=data;
    }
    public tree<T> addChild(tree<T> child){
        child.setParent(this);
        this.children.add(child);
        return child;
    }
    public void addChildren(List<tree<T>> children) {
        children.forEach(each -> each.setParent(this));
        this.children.addAll(children);
    }
    public List<tree<T>> getChildren(){
        return children;
    }
    public T getData() {
        return data;
    }
    public void Setdata(T data) {
        this.data=data;
    }
    private void setParent(tree<T> parent) {
        this.parent=parent;
    }
    public tree<T> getParent(){
        return parent;
    }

    private static <T> void printTree(tree<T> node,String appender) {
        System.out.println(appender+node.getData());
        node.getChildren().forEach(each -> printTree(each,appender + appender));

    }
    public static void main(String[] args) {
        tree<String> root=createTree();
        printTree(root," ");

    }
    private static tree<String> createTree() {
        tree<String> root=new tree<>("                                   Трендафил и Надка ");

        tree<String> node5=root.addChild(new tree<String>(""));

        tree<String> node1=root.addChild(new tree<String>("               Владислав                Мариян                  Мирела   "));
        tree<String> node3=root.addChild(new tree<String>(""));
        tree<String> node4=root.addChild(new tree<String>(""));
        tree<String> node11=root.addChild(new tree<String>("       Владивлав и Кристина      Мариян и Десислава      Мирела и Адриан  "));
        tree<String> node6=root.addChild(new tree<String>(""));


        tree<String> node111=root.addChild(new tree<String>("          Ванеса и Галя                Мартин                 Калоян "));

        return root;
    }
}