Please help

language: Java

Exercises Each of the following exercises is a method to be added to the ArrayIntList class from this chapter 1. Write a method called lastIndexor that accepts an integer as a parameter and returns the index in the list of the last occurrence of that value, or -1 if the value is not found in the list. For example, if the list stores 11. 18. 2. 7, 18, 39, 18, 40), then the last index of 18 is 6 and the last index of 3 is -1. 2. Write a method called index that wanted