internal void Process(List <CityConnectedContract> cityList)
{
StepCount += 1;
var newList = new List <CityConnectedContract>();
foreach (var item in cityList)
{
if (item.IsCityConnected)
{
continue;
}
var cityConnect = SelectAvailableCityToLink(cityList, item);
if (cityConnect != null)
{
var tempSubCity = new CityConnectedContract {
CityAvaliableRoadList = new List <CityConnectedContract>()
};
tempSubCity.CityAvaliableRoadList.AddRange(cityConnect.CityAvaliableRoadList.Where(x => x.CityId != item.CityId).ToList());
tempSubCity.CityAvaliableRoadList.AddRange(item.CityAvaliableRoadList.Where(x => x.CityId != cityConnect.CityId).ToList());
newList.Add(new CityConnectedContract
{
CityId = item.CityId,
CityConnectTo = 0,
IsCityConnected = false,
CityAvaliableRoadList = tempSubCity.CityAvaliableRoadList
});
item.IsCityConnected = true;
item.CityConnectTo = cityConnect.CityId;
cityConnect.IsCityConnected = true;
cityConnect.CityConnectTo = item.CityId;
}
else
{
newList.Add(new CityConnectedContract
{
CityId = item.CityId,
CityConnectTo = 0,
IsCityConnected = false,
CityAvaliableRoadList = item.CityAvaliableRoadList
});
}
}
var isAllCityLinked = cityList.All(x => x.IsCityConnected) && newList.Count == 1;
if (isAllCityLinked)
{
Console.WriteLine("City Count: " + CityCount);
Console.Write("Minimum step count to link all city : " + StepCount);
}
else
{
Process(newList);
}
}
internal CityConnectedContract SelectAvailableCityToLink(List <CityConnectedContract> cityList, CityConnectedContract city)
{
var minCount = 999;
var indisCity = 0;
CityConnectedContract minCity = null;
foreach (var item in city.CityAvaliableRoadList)
{
if (item.IsCityConnected)
{
continue;
}
for (var i = 0; i < cityList.Count; i++)
{
if (item.CityId == cityList[i].CityId)
{
indisCity = i;
break;
}
}
var minItemCount = cityList[indisCity].CityAvaliableRoadList.Count;
if (minItemCount < minCount)
{
minCount = minItemCount;
minCity = cityList[indisCity];
}
}
return(minCity);
}