class FindHelper
{
public static int Find<T>(T[] items, T item)
{
for (int i = 0; i < items.Length; i++)
{
if (items[i].Equals(item))
{
return i;
}
}
return -1;
}
}
class Program
{
static void Main(string[] args)
{
int i = FindHelper.Find<int>(new int[] { 25, 29, 30, 18, 14, 9, 7, 13 }, 30);
Console.WriteLine("30在数组中的索引位置是:" + i.ToString());
Console.ReadLine();
}
}