Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Implement a sort method
public void sort()
Implement any sort algorithm. Do not use any of Java's built-in sorting algorithms.
 
i have this code so far:
import java.util.AbstractList;
import java.util.Random;

public class MyLinkedList<E extends Comparable<E>> extends AbstractList<E> {

int size = 0;
Node<E> root = null;

class Node<E> {

E elem;
Node<E> next;

public Node(E elem) {
this.elem = elem;
next = null;
}
}

@Override
public void add(int index, E element) {

Node<E> newNode = new Node(element);

Node<E> temp = root;

for (int i = 1; i < index; i++) {
temp = temp.next;
}

if ((temp == null) || (index == 0)) {

newNode.next = root;
root = newNode;

} else {

newNode.next = temp.next;
temp.next = newNode;

}

size++;

}

@Override
public E remove(int index) {

E result = null;

Node<E> temp = root;

for (int i = 1; i < index; i++) {
temp = temp.next;
}

if (root == null) {
result = null;

} else if ((temp == null) || (index == 0)) {

result = root.elem;
root = root.next;

} else {

result = temp.next.elem;
temp.next = temp.next.next;

}

size--;

return result;

}

@Override
public E set(int index, E element) {

E replaced = remove(index);
add(index, element);

return replaced;
}

@Override
public E get(int index) {

Node<E> temp = root;

for (int i = 0; i < index; i++) {
if (temp != null) {
temp = temp.next;
} else {
return null;
}
}

if (temp != null) {
return temp.elem;
}

return null;
}

@Override
public int size() {
return size;
}


public void shuffle(long seed) {

Random random = new Random(seed);

Node<E> temp = root;

while (temp != null) {

int index = random.nextInt(size);

E data = temp.elem;

temp.elem = get(index);
set(index, data);

temp = temp.next;
}
}


public void sort() {

for (int i = 0; i < size; i++) {
for (int j = 0; j < size - 1 - i; j++) {

E elem1 = get(j);
E elem2 = get(j + 1);

if (elem1.compareTo(elem2) > 0) {
set(j, elem2);
set(j + 1, elem1);
}
}
}
}
}
 
however i am having trouble with my output i.e.
it is supposed to be 
Small data set\n
[E, A, D, B, C]\n
Sort\n
[A, B, C, D, E]\n
Clearing\n
[  ]\n // two spaces here ...
 
but it is outputting:
Small data set\n
[E, A, D, B, C]\n
Sort\n
[A, B, C, D, E]\n
Clearing\n
[ ]\n // only one space ...
 
can an expert help fix my code so that it creates two spaces in the brackets of the clearing, that is the only part of my ouput that is incorrect 
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