Modify the hash.java program to use quadratic probing.

Be sure that the code compiles and executes correctly.

// hash.java // demonstrates hash table with linear probing // to run this program: C:>java HashTableApp import java.io.*; //////////////////////////////////////////////////////////////// class DataItem { // (could have more data) private int iData; // data item (key) //-------------------------------------------------------------- public DataItem(int ii) // constructor { iData = ii; } //-------------------------------------------------------------- public int getKey() { return iData; } //-------------------------------------------------------------- } // end class DataItem //////////////////////////////////////////////////////////////// class HashTable { private DataItem[] hashArray; // array holds hash table private int arraySize; private DataItem nonItem; // for deleted items // ------------------------------------------------------------- public HashTable(int size) // constructor { arraySize = size; hashArray = new DataItem[arraySize]; nonItem = new DataItem(-1); // deleted item key is -1 } // ------------------------------------------------------------- public void displayTable() { System.out.print(Table: ); for(int j=0; j