一个类里面怎样在一个方法里面调用另一个方法 C#

[ws20110318]

class Program
{
static void Main(string[] args)
{
int[] arrI = new int[10];
jisuan js = new jisuan();
int i = 0;
int j = 0;
string strExit = "";
Console.WriteLine("请输入十个数字：");
while (true)
{
if (i == 10) break;
Console.Write("请输入第"+(i+1).ToString() +"个数字:");
string strRead = Console.ReadLine();
if (!Int32.TryParse(strRead,out arrI[i]))
{
Console.WriteLine("你输入的数字不正确！请重新输入");
continue;
}
Console.WriteLine("是否继续?（输入'N'退出）");
strExit = Console.ReadLine();
if (strExit == "N" || strExit=="n")
{
break;
}
i++;
j++;
}
while (true)
{
Console.WriteLine("请输入您要的操作：");
Console.WriteLine("1、平均值");
Console.WriteLine("2、和");
Console.WriteLine("3、退出");
string strRead1 = Console.ReadLine();
if (strRead1 == "3")
break;
switch (strRead1)
{
case "1":
Console.WriteLine("平均值为："+js.Average(arrI,j));
break;
case "2":
Console.WriteLine("和为："+js.Sum(arrI));
break;


}


}
}
}
class jisuan
{

public double Average(int[] arrI3,int j2)
{
double average = 0.0;
//for (int i3 = 0; i3 < j2; i3++)
//{
// average+=arrI3[i3];
//}
average = average / j2;
return average;
}
public int Sum(int[] arrI4)
{
int sum = 0;
for (int i4=0;i4<arrI4.Length;i4++)
{
sum+=arrI4[i4];
}
return sum;
}

}
类jisuan:
Average方法中注释的那个语句在下面Sum方法里已经出现过，现在我不想在Average这个方法里写这个语句，我想直接调用Sum方法，该怎么调用？希望高手指点一下，谢谢！！

[wtj2832]

同一类中，直接调用啊
average=Sum(arrI3);

[阳明 to life]

public double Average(int[] arrI3,int j2)
{
double average = 0.0;
int sumResult = sum(arrI3);
average = average / j2;
return average;
}

[子夜__]

public double Average(int[] arrI3,int j2)
  {
    return sum(arrI3)/ j2;
  }

[jeven_xiao]

[Quote=引用 3 楼 wxr0323 的回复:]
C# code
public double Average(int[] arrI3,int j2)
{
return sum(arrI3)/ j2;
}
[/Quote]

+1

[hztltgg]

用面向过程的思路写面向对象的代码，总是别扭