public Dictionary<string, PersonData> ReadInput(StreamReader _reader, StreamWriter _writer)
{
var inputString = _reader.ReadLine().Split('\t');
string[] meAndMyFriends;
Name1 = inputString[0];
Name2 = inputString[1];
while (!_reader.EndOfStream)
{
meAndMyFriends = _reader.ReadLine().Split('\t');
int size = meAndMyFriends.Length;
if (size > 1) // There are some friends
{
Person person = new Person();
person.Name = meAndMyFriends[0];
List<Person> friends = new List<Person>();
for (int i = 1; i < size; i++)
{
if (string.IsNullOrEmpty(meAndMyFriends[i]))
{
continue;
}
Person friend = new Person();
friend.Name = meAndMyFriends[i];
friends.Add(friend);
}
person.children = friends;
PersonData personData = new PersonData();
personData.Friend = person;
graph.Add(person.Name, personData);
}
}
return graph;
}
public void BFS()
{
InputInformation information = new InputInformation();
graph = information.ReadInput(_reader, _writer);
Person person = new Person();
person.Name = information.Name1;
person.children = graph[person.Name].Friend.children;
queue.Enqueue(person);
graph[person.Name].Was = true;
while (queue.Count > 0)
{
Person p = queue.Peek();
//Thread.Sleep(1000);
queue.Dequeue();
if (!graph.ContainsKey(p.Name)) // If graph doesn't contain Key = p.Name
{
continue;
}
for (int i = 0; i < graph[p.Name].Friend.children.Count; i++)
{
Person to = graph[p.Name].Friend.children[i];
if (graph.ContainsKey(to.Name))
{
if (graph[to.Name].Was == false)
{
graph[to.Name].Was = true;
queue.Enqueue(to);
graph[to.Name].Distance = graph[p.Name].Distance + 1;
}
}
else
{
PersonData personData = new PersonData();
//personData.Friend = new Person();
personData.Was = true;
graph.Add(to.Name, personData);
graph[to.Name].Distance = graph[p.Name].Distance + 1;
}
}
}
Message(information.Name1, information.Name2, graph[information.Name2].Distance);
_reader.Close();
_writer.Close();
}