In my code below I am trying to find out "products" which has no child associated with it. I have a structure of products like parent and child. Products are in an arraylist:{A,B,C,D,E,F,G}. I represent these products(A,B,C..) as objects of class ProductionOrder:
public class ProductionOrder {
public int id;
public int parentId;
public ProductionOrder(int ids,int parentIds) {
id=ids;
parentId=parentIds;
}
}
I store each product(A,B,C..) with an id and its associated productId(If any). If it is a parent or if the product does not have a child and is standalone, I assign parentID as 0. if it is a child of some parent(A(Id=1)) , I assign A's child with parentID=1. Now I need to sort out all the child and standalone product and store it in a list and return it. Here is what I started, but need to think of a logic to iterate and get the childs:
import java.util.*;
public class ProductTest {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("Hello");
ArrayList<ProductionOrder> prod=new ArrayList<ProductionOrder>();
ProductionOrder A=new ProductionOrder(1,0);
prod.add(A);
ProductionOrder F=new ProductionOrder(2,1);
prod.add(F);
ProductionOrder C=new ProductionOrder(3,1);
prod.add(C);
ProductionOrder E=new ProductionOrder(4,3);
prod.add(E);
ProductionOrder D=new ProductionOrder(5,0);
prod.add(D);
ProductionOrder B=new ProductionOrder(6,5);
prod.add(B);
ProductionOrder G=new ProductionOrder(7,0);
prod.add(G);
ArrayList<ProductionOrder> result=ProdOrder(prod);
}
static ArrayList<ProductionOrder> ProdOrder(ArrayList<ProductionOrder> prodord){
ArrayList<ProductionOrder> child=new ArrayList<ProductionOrder>();
// logic to get the child and the standalone product with no child like G
return child;
}
}
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