Creating Map composed of 2 Lists using stream().collect in Java

Question

As for example, there are two lists:

List list1 = Arrays.asList(1.0, 2.0);
List list2 = Arrays.asList(\"one_point_zero\", \"two_p         


        

Answer 1

This works for me but is O(n^2):

    Map collect =
            list1.stream()
                    .collect(
                            toMap(Double::doubleValue, 
                                    item -> list2.get(list1.indexOf(item))));