// The Add method for a Janitor droid. Code is the same as the above method except for the type of droid being created.
public bool Add(string Material, string Color, bool HasToolBox, bool HasComputerConnection, bool HasArm, bool HasTrashCompactor, bool HasVaccum)
{
if (lengthOfCollection < (droidCollection.Length - 1))
{
droidCollection[lengthOfCollection] = new JanitorDroid(Material, Color, HasToolBox, HasComputerConnection, HasArm, HasTrashCompactor, HasVaccum);
lengthOfCollection++;
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Public method to Sort the droids into categories using a modified bucket sort
/// </summary>
public void SortIntoCategories()
{
// Create a generic stack for each type of droid, and pass in the droid type as the generic that will
// come through on the stack class as T.
GenericStack <ProtocolDroid> protocolStack = new GenericStack <ProtocolDroid>();
GenericStack <UtilityDroid> utilityStack = new GenericStack <UtilityDroid>();
GenericStack <JanitorDroid> janitorStack = new GenericStack <JanitorDroid>();
GenericStack <AstromechDroid> astromechStack = new GenericStack <AstromechDroid>();
// Create a queue to hold the droids as we pop them off the stack.
GenericQueue <IDroid> categorizedDroidQueue = new GenericQueue <IDroid>();
// For each IDroid in the droidCollection
foreach (IDroid droid in this.droidCollection)
{
// If the droid is not null we want to process it. If it is null we will go to the else
if (droid != null)
{
// The testing of the droids must occur in this order. It must be done in the order of
// most specific droid to least specific.
// If we were to test a droid that IS of type Astromech against Utility BEFORE we test against
// Astromech, it would pass and be put into the Utility stack and not the Astromech. That is why it
// is important to test from most specific to least.
// If the droid is an Astromech, push it on the astromech stack
if (droid is AstromechDroid)
{
astromechStack.Push((AstromechDroid)droid);
}
// Else if it is a JanitorDroid, push it on the janitor stack
else if (droid is JanitorDroid)
{
janitorStack.Push((JanitorDroid)droid);
}
// Do for Utility
else if (droid is UtilityDroid)
{
utilityStack.Push((UtilityDroid)droid);
}
// Do for Protocol
else if (droid is ProtocolDroid)
{
protocolStack.Push((ProtocolDroid)droid);
}
}
// The droid we are trying to consider is null, break out of the loop.
else
{
break;
}
}
// Now that the droids are all in thier respective stacks we can do the work
// of poping them off of the stacks and adding them to the queue.
// It is required that they be popped off from each stack in this order so that they have
// the correct order going into the queue.
// This is a primer pop. It gets the first droid off the stack, which could be null if the stack is empty
AstromechDroid currentAstromechDroid = astromechStack.Pop();
// While the droid that is popped off is not null
while (currentAstromechDroid != null)
{
// Add the popped droid to the queue.
categorizedDroidQueue.Enqueue(currentAstromechDroid);
// Pop off the next droid for the loop test
currentAstromechDroid = astromechStack.Pop();
}
// See above method for Astromech. It is the same except for Janitor
JanitorDroid currentJanitorDroid = janitorStack.Pop();
while (currentJanitorDroid != null)
{
categorizedDroidQueue.Enqueue(currentJanitorDroid);
currentJanitorDroid = janitorStack.Pop();
}
// See above method for Astromech. It is the same except for Utility
UtilityDroid currentUtilityDroid = utilityStack.Pop();
while (currentUtilityDroid != null)
{
categorizedDroidQueue.Enqueue(currentUtilityDroid);
currentUtilityDroid = utilityStack.Pop();
}
// See above method for Astromech. It is the same except for Protocol
ProtocolDroid currentProtocolDroid = protocolStack.Pop();
while (currentProtocolDroid != null)
{
categorizedDroidQueue.Enqueue(currentProtocolDroid);
currentProtocolDroid = protocolStack.Pop();
}
// Now that the droids have all been removed from the stacks and put into the queue
// we need to dequeue them all and put them back into the original array.
// Set a int counter to 0.
int counter = 0;
// This is a primer dequeue that will get the first droid out of the queue.
IDroid iDroid = categorizedDroidQueue.Dequeue();
// While the dequeued droid is not null.
while (iDroid != null)
{
// Add the droid to the droid collection using the int counter as the index
this.droidCollection[counter] = iDroid;
// Increment the counter
counter++;
// Dequeue the next droid off the queue so it can be used in the while condition
iDroid = categorizedDroidQueue.Dequeue();
}
// Set the length of the collection to the value of the counter. It should be the same, but in case it changed.
this.lengthOfCollection = counter;
}