How to get the second highest number in an array in Visual C#?

Question

I have an array of ints. I want to get the second highest number in that array. Is there an easy way to do this?

Answer 1

int[] arr = { 1, 8, 4, 5, 12, 2, 5, 6, 7, 1, 90, 100, 56, 8, 34 };

int first, second;
// Assuming the array has at least one element:
first = second = arr[0];
for(int i = 1; i < arr.Length; ++i)
{
  if (first < arr[i])
  {
    // 'first' now contains the 2nd largest number encountered thus far:
    second = first;
    first = arr[i];
  }

}
MessageBox.Show(second.ToString());