Poj Solution 1208

http://poj.org/problem?id=1208

/* @author:zeropinzuo */
import java.util.*;

public class Main{
    static Scanner cin;
    static MyList list;
    public static void main(String args[]){
        cin = new Scanner(System.in);
        int n = cin.nextInt();
        list = new MyList();
        for(int i = 0;i < n;i++)
            list.add(new Stack(new Integer(i)));
        
        
        while(true)
            if(run() == false)
                break;
        
        show();

        return;
    }
    
    static boolean run(){
        String command = cin.next();
        
        if(command.equals("quit"))
            return false;
        
        Integer a = new Integer(cin.nextInt());
        String scommand = cin.next();
        Integer b = new Integer(cin.nextInt());
        
        if(command.equals("move"))
            return move(a,b,scommand);
        else
            return pile(a,b,scommand);
    }
    
 static boolean move(Integer a,Integer b,String command){
    Stack A = list.contains(a);
    Stack B = list.contains(b);
    if(A == B)
        return true;
    
    if(command.equals("over")){
        B.add(a);
        A.removeSingle(a);
    }
    else{
        Iterator< Integer> iterator = B.getLast(b).iterator();
        while(iterator.hasNext())
            list.get(iterator.next()).selfadd();
        B.removeLast(b).add(a);
        A.removeSingle(a);
    }


        
    return true;    
   }
    
 static boolean pile(Integer a,Integer b,String command){
    Stack A = list.contains(a);
    Stack B = list.contains(b);
    if(A == B)
        return true;
        
    if(command.equals("over")){
        B.add(a).add(A.getLast(a));
        A.removeLast(a).removeSingle(a);
    }
    else{
        Iterator<Integer> iterator = B.getLast(b).iterator();
        while(iterator.hasNext())
            list.get(iterator.next()).selfadd();
        B.removeLast(b).add(a).add(A.getLast(a));
        A.removeLast(a).removeSingle(a);
    }
    return true;        
   }

    static void show(){
        for(Stack stack:list)
            stack.show();
    }
}


class Stack{
    ArrayList< Integer> contents;
    Integer n;
    public Stack(Integer n){
        this.n = n;
        contents = new ArrayList< Integer>();
        contents.add(n);
        return;
    }
    
    boolean contains(Integer value){
        for(Integer p:contents)
            if(p.equals(value))
                return true;
        return false;
    }
    
    Stack add(List< Integer> others){
        contents.addAll(others);
        return this;
    }
    void selfadd(){
        contents.add(n);
    }
    Stack add(Integer n){
        contents.add(n);
        return this;
    }
    
    Stack removeLast(Integer value){
        int num = contents.indexOf(value);
        int size = contents.size();
        for(int i = num+1;i < size;i++)
            contents.remove(num+1);
        return this;
    }
    Stack removeSingle(Integer value){
        contents.remove(value);
        return this;
    }
    
    List< Integer> getLast(Integer value){
        int num = contents.indexOf(value);
        return contents.subList(num+1,contents.size());
    }
    
    void show(){

        System.out.print(n+":");
        for(Integer p:contents)
            System.out.print(" "+p);
        System.out.println();
    }
    
    
}


class MyList extends ArrayList< Stack>{
    Stack contains(Integer value){
        for(Stack stack:this)
            if(stack.contains(value)){
                return stack;
            }
        return null;
    }
}