fun func2() { var data = mutableListOf<Record>( Record("1", "bob", "java", 3), Record("1", "bob", "python", 4), Record("1", "bob", "c++", 5), Record("2", "jack", "php", 7), Record("2", "jack", "java", 2), ) var personList = mutableListOf<Person>() var persons = data.map { Person(it.id, it.name, null…