C#算法之关于大牛生小牛的问题

const int YEAR = 50;
static void Main(string[] args)
{
  int[] yearAmount = new int[YEAR];
  yearAmount[0] = 1;
  for (int year = 1; year < YEAR; year++)
  {
 int count = 0;
 for (int i = year; i > 0; i--)
 {
   if (i >= 2)
 count += yearAmount[i]; //可以生小牛的有几头
   yearAmount[i] = yearAmount[i - 1]; //牛的年龄+1
 }
 yearAmount[0] = count; //生的小牛是0岁
  }
  int result = yearAmount.Sum();
  Console.WriteLine("{0}年总计:{1}头牛", YEAR, result);
  Console.Read();
}