static void Main(string[] args)
{
RouteElem[] arrSrc = new RouteElem[] { new RouteElem("Мельбурн", "Кельн"), new RouteElem("Париж", "Дакар"), new RouteElem("Москва", "Париж"), new RouteElem("Кельн", "Москва") };
RouteElem[] arrRes = OrderRoute(arrSrc);
foreach (RouteElem pElem in arrRes)
{
Console.WriteLine("{0}>{1}", pElem.PointFrom, pElem.PointTo);
}
Console.ReadKey();
}
public static RouteElem[] OrderRoute(RouteElem[] aarrPoints)
{
RouteElem[] arrRes = new RouteElem[aarrPoints.Length];
Array.Copy(aarrPoints, arrRes, aarrPoints.Length);
//ищем 1-й элемент (на него нет ссылок слева)
for (int i = 0; i < arrRes.Length; i++)
{
bool fFound = false;
for (int j = i + 1; j < arrRes.Length; j++)
{
if (arrRes[j].PointTo == arrRes[i].PointFrom)
{
fFound = true;
break;
}
}
if (!fFound)
{
//нашли 1-й элемент
RouteElem pElem = arrRes[0];
arrRes[0] = arrRes[i];
arrRes[i] = arrRes[0];
break;
}
}
//ищем последующие
for (int i = 0; i < arrRes.Length - 1; i++)
{
for (int j = i + 1; j < arrRes.Length; j++)
{
if (arrRes[i].PointTo == arrRes[j].PointFrom)
{
RouteElem pElem = arrRes[i + 1];
arrRes[i + 1] = arrRes[j];
arrRes[j] = pElem;
break;
}
}
}
return(arrRes);
}