//The function removeBook searches for the stock number
//of a Book Record and removes that book from the list.
public Boolean removeBook(long stockNum)
{
BookRecord temp = new BookRecord();
BookRecord back = new BookRecord();
if (m_pHead == null) //CHecks if there is anything in the list
{
return false;
}
temp = m_pHead;
back = null;
while((temp != null) && (stockNum != temp.getStockNum())) //The function moves down the list
{
back = temp;
temp = temp.getNext();
}
//If the list has reached the end and no book is found, a message is printed
if(temp == null)
{
Console.WriteLine("Book not Found.");
return false;
}
else if (back == null) //If the book is at the head, head points to the next node and the book is removed
{
m_pHead = m_pHead.getNext();
temp = null;
}
else //If the book is not at the head, the node before the target is set to the node after the target
{
back.setNext(temp.getNext());
temp = null; //he target is deleted.
}
return true;
}