$1.$ Create a method that takes an ArrayList of doubles and return an ArrayList of the input reversed.

$2.$ Create a method that takes an ArrayList and two indices $,$ the method swaps these two indices.

$3.$ Create a method that takes an ArrayList and an index, the method removes the index value from the ArrayList

$4.$ Create a method that takes an ArrayList of integers and return the average.

$5.$ Create a method that takes two generic ArrayLists and return the union of these two.

$6.$ Create a method that takes an ArrayList of strings and a string $,$ the method returns true if the string exist in the ArrayList

$7.$ Create a method that takes a traditional array of intger and returns it an ArrayList of integer.

$8.$ Create a method that takes : an ArrayList containing $\{1,2,3\},$ and traditional array containing $\{4,5\}$ and a specific index $,$ add the second array to a specific index in the ArrayList, for instance :

int a$[]=\{1,2,3\}$ ;( $()/())/($ t$)$he first array is a traditional array

ArrayList