MCQs > IT & Programming > Kotlin > You would like to group a list of students by last name and get the total number of groups. Which line of code accomplishes this, assuming you have a list of the Student data class? Data class Student(val firstName: String, val lastName: String)

Kotlin MCQs

You would like to group a list of students by last name and get the total number of groups. Which line of code accomplishes this, assuming you have a list of the Student data class? Data class Student(val firstName: String, val lastName: String)

Answer

Correct Answer: Println(students.groupBy{ it.lastName }.count())

Explanation:

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