Sometimes you may have an array with duplicate items and need to remove the duplicates to get only unique items. Here’s how you can do it in Groovy:

        def myArray = [1, 20, 40, 10, 20, 40, 50, 20]
        

In myArray, the numbers 20 and 40 appear multiple times. Groovy has a method called unique() that removes duplicates from an array:

        def myUniqueArray = myArray.unique()
        println(myUniqueArray)
        

Output:

        [1, 20, 40, 10, 50]
        

Note that myUniqueArray is also an array.