Java computer science linked list

Anonymous
timer Asked: Jan 31st, 2016

Question description


1.For the following question - make sure you document it with comments in the code.
2.You must use classes Time1 and BusArrival - You can get those classes in the zip file attached OR here - https://gist.github.com/rootux/69b4909a090ceae2eb35
3.Also make sure that for each method you have a documentation in the header.
4.Make sure that the name of the methods would be exactly as written.
5.The result is 1 file - BusArrivalNode.java zipped inside a file.
6.Write as a comment on the API what is the time complexity and the place complexity of every method you wrote.


Question 1:

Class BusArrivalNode represents a single item in the linked list.

Class will include the two attributes:

1. BusArrival  _busArr

2. BusArrivalNode  _next

U must write the constructors and the methods that are necessary in class.

For this class you have to define three constructors:

1. public BusArrivalNode (BusArrival b)

Receive the bus arrival (an object from class BusArrival) next_ field will be set to null.

2. public BusArrivalNode (BusArrival b, BusArrivalNode n)

Gets the bus arrival (object from class BusArrival) and another item n from type BusArrivalNode. The constructor would init the attributes by the given parameters. _next field will point to n.

3. public BusArrivalNode (BusArrivalNode b)

Copy constructor. Notice you have to copy the information (next) itself and not a copy of the pointer. Which means  in this case aliasing is the right thing.

The methods in class BusArrivalNode are:

* public BusArrival getBusArr() – returns a copy of the bus arrival.

* public BusArrivalNode  getNext()- returns pointer to the next item. Notice that aliasing is not a mistake here either. You need to return the pointer next and not a copy of the pointer.

* public void aetBusArr (BusArrival b) - receives the bus arrival and update the arrival attribute in the vertex.

* public void setNext(BusArrivalNode  next) - receives a pointer and update the pointer attribute to the next item. Notice that aliasing is not a mistake here either. You need to update the information (next) itself and not a copy.


20160130184602time1_and_busarrival.zip

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