(Adapted from Textbook Chapter 7 Exercise 1)
Write a method called lastIndexOf that accepts
an array of integers and an integer value as its parameters
and returns the last index at which the value occurs in the array.
The method shold return -1 if the value is not found.
For example, in the array [74, 85, 102, 99, 101, 85, 56],
the last index of the value 85 is 5. Hint:
The method is supposes to return the position of the last occurrence of
the number with that position initialized to -1.
Then it goes through the array using a for-loop and then whenever the
target value is found, update the position it remembers.
This way, the position will be updated to the last occurrence.
(Adapted from Textbook Chapter 7 Exercise 2)
Write a method called range that returns the range of
values in an array of integers. The range is defined as 1 more than the
difference between the maximum and minimum values in the array. For example,
if an array called llist contains the values
[36, 12, 25, 19, 46, 31, 22] the call of
range(llist) should return
35 (46 - 12 + 1).
You may assume that the array has at least one element.