/*
 * MyList.java
 *
 * Created on November 25, 2004, 5:13 PM
 */

/**
 *
 * @author  levenick
 */
import java.util.*;

/**
 * An implementation of a variable sized list of ints.
 *
 * It uses an array and a variable, last, that holds the index of the
 * last entry in the array (all the entries are kept at the beginning of
 * the array.
 */
public class MyIntVectorList {
    
    Vector list;
    
    /** Creates a new instance of List */
    public MyIntVectorList() {
        list = new Vector();
    }
    
    /**
     * see return
     * @return returns the element at the passed index
     * @param i is the index
     */    
    public int elementAt(int i) {
        return ((Integer) list.elementAt(i)).intValue();
    }
    
    /**
     * Replaces the element at the index with the passed value
     */    
    public void replaceElementAt(int nuValue, int i) {
        list.setElementAt(new Integer(nuValue), i);
    }
    
    /**
     * Removes the element at the passed index.
     */    
    public void removeElementAt(int removalIndex) {
        list.removeElementAt(removalIndex); 
    }
    
    /**
     * Adds an element at a particular index.
     *
     * Values from there down are first shifted down one.
     *
     * Last is incremented (since there is one more thing in the list).
     * @param insertMe the new int value to be inserted
     * @param putHereIndex where to put the value
     */    
    public void addElementAt(int insertMe, int putHereIndex) {
        list.insertElementAt(new Integer(insertMe), putHereIndex);
    }
    
    public void addElement(int nu) {
        list.addElement(new Integer(nu));
    }
    
    /**
     *
     * @return
     */    
    public int length() {
        return list.size();
    }
    
    public void makeEmpty() {
        list.removeAllElements();
    }
    
    public String toString() {
        String returnMe="MyIntVectorList: {";
        
        for (Iterator it=list.iterator(); it.hasNext();) 
            returnMe += "," + it.next().toString();
      
        return returnMe + "}";
    }
}