Write a method named outOfOrder that takes as a parameter an array of double
and returns a value of type int. This method will test the array for being out of
order, meaning that the array violates the condition:
a[0] <=><=>
The method returns –1 if the elements are not out of order; otherwise, it
returns the index of the first element of the array that is out of order. For
example, consider the following declaration:
double[] a = {1.2, 2.1, 3.3, 2.5, 4.5,
7.9, 5.4, 8.7, 9.9, 1.0};
In the array above, a[2] and a[3] are the first pair out of order, and a[3] is
the first element out of order, so the method returns 3. If the array is sorted,
the method returns −1.