I need this fast please

Only Exercise2

IN JAVA

Please and thank you!

returns an int array consisting of only the distinct elements in the ArrayList. Do not modify the inputted ArrayList. Note that this is a very common expectation we will give to you, and is featured in Assignment 5 often. It is almost always bad practice to modify objects that are passed as arguments to methods because, in Java, objects are passed by reference, and therefore changes to one affect all other instances of that object. For example: Exercise 2. Write a method that swaps two columns of a two-dimensional array. Once again, do not modify the inputted array. To avoid doing this, you can use Arrays.copyOf(), which takes an array and the length you want the new array to have. Note though that this works only for 1D arrays, so you'll need to do something more