// iterator with anonymous class

import java.util.*;

public class Iterator4 {
    public static void main(String[] args) {
   	Complex item = new Complex(0,0);
	Data values = new Data(10,-3,3);
	System.out.println(values);
	boolean result = linearSearch(values.makeComplexIterator(),item);
	System.out.println("Is "+item+" found? "+result);
    }

    private static boolean linearSearch(Iterator vals, Object v) {
	while(vals.hasNext())
	    if ( ((Comparable)vals.next()).compareTo(v) == 0 )
		return true;
	return false;
    }
    
}

class Data {
    private Comparable[] values;

    public Data(int size, int min, int max) {
	values = new Comparable[size];
	for (int i=0; i<size; i++)
	    values[i]=randomComplex(min,max);
    }
    
    public Iterator makeComplexIterator() {
	return 
	    new Iterator() {
		private int cursor;
		public boolean hasNext() {
		    return (cursor < values.length) ;
		}
		public Object next() {
		    return values[cursor++];
		}
		public void remove() {}
	    }; // <-- why ";"? ACs are STATEMENT LEVEL!
    }
    
    public String toString() {
	String s="[";
	for (int i=0; i<values.length; i++) {
	    s += values[i];
	    if (i < values.length-1 )
		s+=", ";
	}
	s+="]";
	return s;
    }
    
    private static Complex randomComplex(int x, int y) {
	return new Complex(myRandom(x,y),myRandom(x,y));
    }
    
    private static int myRandom(int min, int max) {
	return (int) (Math.random()*(max-min+1)) + min; 
    }
    
    public Comparable[] getData() { return values; }
    
}