public class genlist<T>{
	public T[] data;
	public genlist(){ data=new T[0]; }
	public void push(T item){
		int n=data.Length;
		T[] newdata = new T[n+1];
		for(int i=0;i<n;i++)newdata[i]=data[i];
		data=newdata;
		data[n]=item;
		}
}