Write a method called rotate that moves the value at the front of a list of integers to the end of the list. For example, if a variable called list stores [8, 23, 19, 7, 12, 4], the call of...

Write a method called rotate that moves the value at the front of a list

of integers to the end of the list. For example, if a variable called list

stores [8, 23, 19, 7, 12, 4], the call of list.rotate(); should

move the value 8 from the front of the list to the back of the list,

producing [23, 19, 7, 12, 4, 8].