Very similar to getMin function

This getMax function in Listing 7 is very similar to the previously-discussed function named getMin in Listing 6.

The main differences between the two functions are:

• This function begins with a trial value of -2147483648 in a variable named max.  This is the algebraically smallest value that can be stored in an element of type long.
• During each iteration of a while loop, one element in the array is compared to see if its value is algebraically greater than the current value stored in max. 
• If so, that value replaces the value in max.