Homework Help is Here – Start Your Trial Now!
Engineering
Computer Science
The java function belw is generating a NullPointerException. How can I improve it? public int quadraticProbing(String[] hashArray, int initial_index, int collision) {         int index = (initial_index + (collisions * collisions)) % maxSize;         System.out.println("Index " + index);         if (index == maxSize) {             System.out.println("flag 04");             index = 0; // To wrap around the table         }         if (hashArray[index] == null) {                         return index; // We can insert at this location         } else {             // The index isn't empty so we need to insert the value             // at the end of the list         }         collisions = ++collision;         return quadraticProbing(hashArray, initial_index, collision); // Recursive call     }

The java function belw is generating a NullPointerException. How can I improve it? public int quadraticProbing(String[] hashArray, int initial_index, int collision) {         int index = (initial_index + (collisions * collisions)) % maxSize;         System.out.println("Index " + index);         if (index == maxSize) {             System.out.println("flag 04");             index = 0; // To wrap around the table         }         if (hashArray[index] == null) {                         return index; // We can insert at this location         } else {             // The index isn't empty so we need to insert the value             // at the end of the list         }         collisions = ++collision;         return quadraticProbing(hashArray, initial_index, collision); // Recursive call     }

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
See similar textbooks
icon
Related questions
Question

Hello

The java function belw is generating a NullPointerException. How can I improve it?

public int quadraticProbing(String[] hashArray, int initial_index, int collision) {
        int index = (initial_index + (collisions * collisions)) % maxSize;
        System.out.println("Index " + index);
        if (index == maxSize) {
            System.out.println("flag 04");
            index = 0; // To wrap around the table
        }
        if (hashArray[index] == null) {            
            return index; // We can insert at this location
        } else {
            // The index isn't empty so we need to insert the value
            // at the end of the list
        }
        collisions = ++collision;
        return quadraticProbing(hashArray, initial_index, collision); // Recursive call
    }
 
Thanks in advance.
Respectfully,
Emmanuel
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

I apologize. The solution did not work. The variable collisions is one of the variables declared in the class  as follows:

private int collisions;

The controller initialized collisions as:

collisions = 0;

But these did not help. Following your advice, I tried to use as local variable:

int collision = 0; // did not work

int collisions = 0; // did not work either

I will appreciate your further help.

Respectfully

Emmanuel

Solution
Bartleby Expert
SEE SOLUTION
Knowledge Booster
Hash Table
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
SEE MORE TEXTBOOKS