Problem $1$

Implement the methods of class TestArrayList

public class TestArraylist

$\{$

$\frac{?}{?}******$

Finds maximum value in an ArrayList of Big Integers.

@param list to search for maximum

@ returns the maximum or null if the list is null or the list size is $0.$

$*/$

public static BigInteger max$($ArrayList$I^{******}**\frac{*}{?}{1}^{******}**\frac{*}{?}$