/* Returns the smallest |i| such that |array[i] == key|,
   or |-1| if |key| is not in |array[]|.
   |array[]| must be an array of |n| |int|s sorted in ascending order. */
int
seq_sorted_search (int array[], int n, int key)
{
  int i;

  for (i = 0; i < n; i++)
    if (key <= array[i])
      return key == array[i] ? i : -1;

  return -1;
}