package q2;

import java.util.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;



public class MyInvoice implements IInvoice {

    class SortTotal implements Comparator<Invoice>{

        @Override
        public int compare(Invoice t, Invoice t1) {
            return Double.compare(t.total, t1.total);
        }

}

    public Invoice f1(ArrayList<Invoice> a) {
       SortTotal sortT = new SortTotal();
       Collections.sort(a, sortT);
       Invoice min = Collections.min(a, sortT);
       return min;
    }

    @Override
    public void f2(ArrayList<Invoice> a, int tt) {
        for (int i = 0; i<a.size(); i++){
            if (a.get(i).total >= 120){
                a.get(i).total += tt;
            }
        }

    }

    @Override
    public int f3(ArrayList<Invoice> a, int tt) {
        int count = 0;
        Iterator iter = a.iterator();
        while (iter.hasNext()){
            Invoice temp = (Invoice) iter.next();
            if (temp.total <= tt){
                count ++;
            }
        }
        return count;
    }
}