Payroll ex2, 3.6.2013po

import java.util.*;

public class Payroll{
    public List<Employee> employess = new ArrayList<Employee>();

    public Iterator<Employee> aboveAverageIterator(){
        double sum = 0;

        for(Employee a: employess){
            sum += a.getSalary();
        }

        return new AboveAverageIterator(sum/(employess.size()));
    }



    class AboveAverageIterator implements Iterator<Employee>{
        private double average;
        private Employee cur = null;
        private final Iterator<Employee> it = employess.iterator();

        public AboveAverageIterator(double average){
            this.average = average;
            this.reach_next();
        }

        private void reach_next(){
            boolean flag = false;
            Employee t = null;
            while(!flag && it.hasNext()){
                t = it.next();
                if(t.getSalary() > average)
                    flag = true;
            }

            cur = flag ? t : null;
        }

        public boolean hasNext(){
            return cur != null;
        }

        public Employee next(){
            Employee temp = cur;
            this.reach_next();
            return temp;
        }

        public void remove(){
            throw new UnsupportedOperationException();
        }
    }
}