/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package vaje12;

import java.util.Collection;
import java.util.Iterator;

/**
 *
 * @author sk0019
 */
public class Vaje12 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
    }

}
class DinamicnaTabela implements Collection<Object> {

    Object[] tab;
    int size;

    public DinamicnaTabela() {
        this.tab = new Object[10];
        this.size=10;
    }
    public DinamicnaTabela(int len) {
        this.tab = new Object[len];
        this.size = len;
    }
    @Override
    public int size() {
        for(int i = 0; i < size; i++){
            if(tab[i]==(null))
                return i;
        }
    return size;
    }

    @Override
    public boolean isEmpty() {
        for(int i = 0; i < size; i++){
            if(tab[i]!=(null))
                return false;
        }
    return true;
    }

    @Override
    public boolean contains(Object o) {
        for(int i = 0; i < size; i++){
            if(tab[i]==o)
                return true;
        }
    return false;
    }

    @Override
    public Iterator<Object> iterator() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public Object[] toArray() {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public <T> T[] toArray(T[] a) {
        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
    }

    @Override
    public boolean add(Object e) {
        if(size()==size){
            Object[] nov = new Object[size + 1];
            for(int z = 0; z < size; z++){
                nov[z] = tab[z];
            }
            nov[size + 1] = e;
            this.tab = nov;
        }
        else
            tab[size()]=e;
        return true;
    }

    @Override
    public boolean remove(Object o) {
        for(int y =0; y < size(); y++){
            if(tab[y]==o){
                tab[y]=null;
            }
        }
    return true;
    }

    @Override
    public boolean containsAll(Collection<?> c) throws IzjemaNepodprteOperacije {
        throw new IzjemaNepodprteOperacije();
    }

    @Override
    public boolean addAll(Collection<? extends Object> c) {
        for(Object o:c){
            add(o);
        }
    return true;
    }
    @Override
    public boolean removeAll(Collection<?> c) {
        for(Object o:c){
            if(!remove(o)){return false;}
        }
        return true;
    }

    @Override
    public boolean retainAll(Collection<?> c)throws IzjemaNepodprteOperacije {
    throw new IzjemaNepodprteOperacije();
    }

    @Override
    public void clear() throws IzjemaNepodprteOperacije{
        throw new IzjemaNepodprteOperacije();
    }

}
class IzjemaNepodprteOperacije extends RuntimeException {
    @Override
    public String getMessage(){
        return "Nepodprta Operacija";
    }
}