//param : NA
//summary : Sort the list alphabatically
//return : NA
//return type : NA
public void SortByName()
{
// write your implementation here
StockNode temp = this.head;
int StockLen = 0;
while (temp.Next != null)
//Travering the list to find the total number of stocks as StockLen
{
StockLen++;
temp = temp.Next;
}
//Creating local variables for run-time data
decimal[] holdings = new decimal[StockLen];
decimal[] currentPrice = new decimal[StockLen];
string[] symbol = new string[StockLen];
string[] name = new string[StockLen];
temp = this.head;
int ctr = 0;
while (temp.Next != null)
{
//Populating the incremental local variables
holdings[ctr] = temp.StockHolding.Holdings;
currentPrice[ctr] = temp.StockHolding.CurrentPrice;
symbol[ctr] = String.Copy(temp.StockHolding.Symbol);
name[ctr] = String.Copy(temp.StockHolding.Name);
temp = temp.Next;
ctr++;
}
//Creating comparision logic with nested loops using CompareTo
for (int i = 1; i < name.Length; i++)
{
for (int j = 0; j < name.Length - i; j++)
{
if (name[j].CompareTo(name[j + 1]) > 0)
{
string nametemp = String.Copy(name[j]);
name[j] = String.Copy(name[j + 1]);
name[j + 1] = String.Copy(nametemp);
string symboltemp = String.Copy(symbol[j]);
symbol[j] = String.Copy(symbol[j + 1]);
symbol[j + 1] = String.Copy(symboltemp);
decimal holdingtemp = holdings[j];
holdings[j] = holdings[j + 1];
holdings[j + 1] = holdingtemp;
decimal currentprice = currentPrice[j];
currentPrice[j] = currentPrice[j + 1];
currentPrice[j + 1] = currentprice;
}
}
}
//The existing list will be now updated with sorted array values
temp = this.head;
ctr = 0;
while (temp.Next != null)
{
temp.StockHolding.Holdings = holdings[ctr];
temp.StockHolding.CurrentPrice = currentPrice[ctr];
temp.StockHolding.Name = String.Copy(name[ctr]);
temp.StockHolding.Symbol = String.Copy(symbol[ctr]);
temp = temp.Next;
ctr++;
}
}
//Constructor for initialization
public StockList()
{
this.head = null;
}
//constructor to initialize the variables of object
public StockNode(Stock stockHolding)
{
StockHolding = stockHolding;
Next = null;
}
// FOR STUDENTS
//param : NA
//summary : Sort the list by descending number of holdings
//return : NA
//return type : NA
public void SortByValue()
{
//Write your implementation here
//We created local variables and used the method of bubblesorting to sort the local in descending order
StockNode temp = this.head;
int StockLen = 0;
//The below function traverses the list to find the total number of stocks, stored as StockLen
while (temp.Next != null)
{
StockLen++;
temp = temp.Next;
}
decimal[] holdings = new decimal[StockLen];
decimal[] currentPrice = new decimal[StockLen];
string[] symbol = new string[StockLen];
string[] name = new string[StockLen];
//This fucntion stores the incremental local variables
temp = this.head;
int ctr = 0;
while (temp.Next != null)
{
holdings[ctr] = temp.StockHolding.Holdings;
currentPrice[ctr] = temp.StockHolding.CurrentPrice;
symbol[ctr] = String.Copy(temp.StockHolding.Symbol);
name[ctr] = String.Copy(temp.StockHolding.Name);
temp = temp.Next;
ctr++;
}
//Now we build comparision logic with nested loops
for (int i = 1; i < name.Length; i++)
{
for (int j = 0; j < name.Length - i; j++)
{
if (holdings[j] < holdings[j + 1])
{
string nametemp = String.Copy(name[j]);
name[j] = String.Copy(name[j + 1]);
name[j + 1] = String.Copy(nametemp);
string symboltemp = String.Copy(symbol[j]);
symbol[j] = String.Copy(symbol[j + 1]);
symbol[j + 1] = String.Copy(symboltemp);
decimal holdingtemp = holdings[j];
holdings[j] = holdings[j + 1];
holdings[j + 1] = holdingtemp;
decimal currentprice = currentPrice[j];
currentPrice[j] = currentPrice[j + 1];
currentPrice[j + 1] = currentprice;
}
}
}
//The existing list will be now updated with sorted array values
temp = this.head;
ctr = 0;
while (temp.Next != null)
{
temp.StockHolding.Holdings = holdings[ctr];
temp.StockHolding.CurrentPrice = currentPrice[ctr];
temp.StockHolding.Name = String.Copy(name[ctr]);
temp.StockHolding.Symbol = String.Copy(symbol[ctr]);
temp = temp.Next;
ctr++;
}
}
//param (Stock)stock : stock that is to be added
//summary : Add node at first position in list
// This is done by creating a new node
// and pointing it to the current list
//return : NA
//return type : NA
public void AddFirst(Stock stock)
{
StockNode nodeToAdd = new StockNode(stock);
nodeToAdd.Next = head;
head = nodeToAdd;
}
// default constructor
public StockNode()
{
StockHolding = null;
Next = null;
}
//param : NA
//summary : Sort the list alphabatically
//return : NA
//return type : NA
//param : NA
public void SortByName()
{
// if there is nothing in the list, stop.
if (this.IsEmpty())
{
return;
}
// do a double loop to compare every item in the list
// with every other item in the list
// based on bubble sort implementation of DSA guide - c sharp code download
// grab first stock in stock list and next stock in list
// compare their names
// if first stock name greater than second stock, leave first stock in its place
// if first stock name less than second stock name, swap stocks
else
{
StockNode nodeReference = null;
StockNode currentNode = this.head;
StockNode nextNode = currentNode.Next;
String currStockName = currentNode.StockHoldings.Name;
String nextStockName = nextNode.StockHoldings.Name;
for (int i = 0; i < this.Length(); i++)
{
for (int j = 0; j < this.Length(); j++)
{
// String.Compare (strA, str B)
// Less than zero strA precedes strB in the sort order.
// Zero strA occurs in the same position as strB in the sort order.
//Greater than zero strA follows strB in the sort order.
// String.Compare (currStockName, nextStockName) < 0
// already in right sort order, move on to next node
// if String.Compare (currStockName, nextStockName) < 0
// not in right sort order, need to swap
if (String.Compare(currStockName, nextStockName) > 0) // swap
{
nodeReference = this.Swap(currentNode.StockHolding);
currentNode = nodeReference;
currStockName = currentNode.StockHoldings.Name;
nextNode = currentNode.Next;
nextStockName = nextNode.StockHoldings.Name;
String currStockName = currentNode.StockHoldings.Name;
String nextStockName = nextNode.StockHoldings.Name;
}
else // no need to swap, just move on to next node
{
currentNode = nextNode;
currStockName = currentNode.StockHoldings.Name;
nextNode = currentNode.Next;
nextStockName = nextNode.StockHoldings.Name;
nodeReference = null; // not sure if I need this
}
}
}
}
//param (StockList)listToMerge : second list to be merged
//summary : merge two different list into a single result list
//return : merged list
//return type : StockList
public StockList MergeList(StockList listToMerge)
{
// The Stock node objects first, current and previous are used to store the
// head node, active node and the prior node informations
StockList resultList = new StockList();
StockNode first = null, current = null, previous = null;
StockNode priNode = this.head;
StockNode secNode = listToMerge.head;
// The below logic progressively iterates through both the lists and stores the nodes in
// sorted order. For ideal nodes, the holdings attribute is summed
// This while loop iterates until all the nodes in the primary list are encountered
while (priNode != null)
{
if (secNode != null && priNode.StockHolding.Name.CompareTo(secNode.StockHolding.Name) == 0)
{
decimal updateHoldings = priNode.StockHolding.Holdings + secNode.StockHolding.Holdings;
priNode.StockHolding.Holdings = updateHoldings;
current = priNode;
priNode = priNode.Next;
secNode = secNode.Next;
}
else if (secNode != null && priNode.StockHolding.Name.CompareTo(secNode.StockHolding.Name) > 0)
{
current = secNode;
secNode = secNode.Next;
}
else
{
current = priNode;
priNode = priNode.Next;
}
// 'first' is used to store the head node
if (first == null)
{
first = current;
}
// Except for the first iteration, 'previous' is used to store the prior node information
if (previous != null)
{
previous.Next = current;
}
previous = current;
}
// This while loop handles the uniterated nodes in the listToMerge
while (secNode != null)
{
current = secNode;
if (first == null)
{
first = current;
}
if (previous != null)
{
previous.Next = current;
}
secNode = secNode.Next;
}
resultList.head = first;
return(resultList);
}
//param : NA
//summary : Sort the list alphabatically
//return : NA
//return type : NA
//param : NA
public void SortByName() // Carole
{
// if there is nothing in the list, stop.
if (this.IsEmpty())
{
return;
}
// do a double loop to compare every item in the list
// with every other item in the list
// based on bubble sort implementation of DSA guide - c sharp code download
// grab first stock in stock list and next stock in list
// compare their number of stocks
// if first stock greater than second stock, leave first stock in its place
// if first stock less than second stock, swap stocks
else
{
StockNode currentNode = this.head;
StockNode nextNode = currentNode.Next;
StockNode previousNode = null;
String currStockName = currentNode.StockHolding.Name;
String nextStockName = nextNode.StockHolding.Name;
String prevStockName = "";
for (int i = 0; i < this.Length(); i++)
{
currentNode = this.head;
nextNode = currentNode.Next;
previousNode = null;
currStockName = currentNode.StockHolding.Name;
nextStockName = nextNode.StockHolding.Name;
prevStockName = "";
for (int j = 0; j < this.Length(); j++)
{
if (String.Compare(currStockName, nextStockName) > 0) // swap ascending
{
// Console.WriteLine("Logic 1");
previousNode = currentNode;
prevStockName = previousNode.StockHolding.Name;
// Console.WriteLine("Swapping:" + currentNode.StockHolding.Name);
currentNode = this.Swap(previousNode.StockHolding);
currStockName = currentNode.StockHolding.Name;
nextNode = currentNode.Next;
nextStockName = nextNode.StockHolding.Name;
}
else // no need to swap, just move on to next node
{
// Console.WriteLine("Logic 2");
if ((currentNode.Next != null) && (currentNode.Next.Next != null))
{
// Console.WriteLine("Logic 3");
currentNode = currentNode.Next;
currStockName = currentNode.StockHolding.Name;
nextNode = currentNode.Next;
nextStockName = nextNode.StockHolding.Name;
}
}
}
}
}
}
// FOR STUDENTS
//param : NA
//summary : Sort the list by descending number of holdings
//return : NA
//return type : NA
//param : NA
public void SortByValue() // Carole
{
// if there is nothing in the list, stop.
if (this.IsEmpty())
{
return;
}
// do a double loop to compare every item in the list
// with every other item in the list
// based on bubble sort implementation of DSA guide - c sharp code download
// grab first stock in stock list and next stock in list
// compare their number of stocks
// if first stock greater than second stock, leave first stock in its place
// if first stock less than second stock, swap stocks
else
{
StockNode currentNode = this.head;
StockNode nextNode = currentNode.Next;
StockNode previousNode = null;
decimal currNumHoldings = currentNode.StockHolding.Holdings;
decimal nextNumHoldings = nextNode.StockHolding.Holdings;
decimal prevNumHoldings = 0;
for (int i = 0; i < this.Length(); i++)
{
currentNode = this.head;
nextNode = currentNode.Next;
previousNode = null;
currNumHoldings = currentNode.StockHolding.Holdings;
nextNumHoldings = nextNode.StockHolding.Holdings;
prevNumHoldings = 0;
for (int j = 0; j < this.Length(); j++)
{
// Console.WriteLine("Loop i is:" + i);
// Console.WriteLine("Loop j is:" + j);
// Console.WriteLine("CurrentNumHoldings:" + currNumHoldings);
// Console.WriteLine("NextNumHoldings:" + nextNumHoldings);
if (currNumHoldings < nextNumHoldings) // swap
{
// Console.WriteLine("Logic 1");
previousNode = currentNode;
prevNumHoldings = previousNode.StockHolding.Holdings;
// Console.WriteLine("Swapping:" + currentNode.StockHolding.Name);
currentNode = this.Swap(previousNode.StockHolding);
currNumHoldings = currentNode.StockHolding.Holdings;
nextNode = currentNode.Next;
nextNumHoldings = nextNode.StockHolding.Holdings;
}
else // no need to swap, just move on to next node
{
// Console.WriteLine("Logic 2");
if ((currentNode.Next != null) && (currentNode.Next.Next != null))
{
// Console.WriteLine("Logic 3");
currentNode = currentNode.Next;
currNumHoldings = currentNode.StockHolding.Holdings;
nextNode = currentNode.Next;
nextNumHoldings = nextNode.StockHolding.Holdings;
}
}
}
}
}
}
/// <summary>
/// swaps the node passed as argument with next node in list
/// Sorting the list using the simple bubble sort algorithm requires repeatdely traversing
/// the list and pushing a node down the list until it falls in place
/// Pushing the node is essentially a swap operation, where we take the next node
/// and put it in the current position and move the current node to the next position on the list
/// </summary>
/// <param name="nodeOne">first node to be swapped</param>
/// <returns>Reference to current node</returns>
public StockNode Swap(Stock nodeOne)
{
StockNode prevNodeOne = null;
StockNode currNodeOne = this.head;
// Console.WriteLine("Node passed is Current Node One Stock is:" + currNodeOne.StockHolding.Name);
// Console.WriteLine("Node Passed is Current Node One Stock value is:" + currNodeOne.StockHolding.Holdings);
// traverse the list until we reach the node to swap
while (currNodeOne != null && currNodeOne.StockHolding != nodeOne)
{
prevNodeOne = currNodeOne;
currNodeOne = currNodeOne.Next;
// Console.WriteLine("Previous Node One Stock is:" + prevNodeOne.StockHolding.Name);
// Console.WriteLine("Previous Node One Stock value is:" + prevNodeOne.StockHolding.Holdings);
// Console.WriteLine("Current Node One Stock is:" + currNodeOne.StockHolding.Name);
// Console.WriteLine("Current Node One Stock value is:" + currNodeOne.StockHolding.Holdings);
}
// maintain references to the nodes to be swapped
StockNode prevNodeTwo = currNodeOne;
StockNode currNodeTwo = currNodeOne.Next;
// handle corner cases, maybe we have reached the end of the list
if (currNodeOne == null || currNodeTwo == null)
{
return(null);
}
// perhaps the insertion is at the top of the list
if (prevNodeOne != null)
{
prevNodeOne.Next = currNodeTwo;
}
else
{
this.head = currNodeTwo;
}
if (prevNodeTwo != null)
{
prevNodeTwo.Next = currNodeOne;
}
else
{
this.head = currNodeOne;
}
// normal case, swap nodes
StockNode temp = currNodeOne.Next;
currNodeOne.Next = currNodeTwo.Next;
currNodeTwo.Next = temp;
// Console.WriteLine("Node returned is Current Node Two Stock Returned is:" + currNodeTwo.StockHolding.Name);
// Console.WriteLine("Node Returned is Current Node Two Stock Returned value is:" + currNodeTwo.StockHolding.Holdings);
return(currNodeTwo);
}