Exercise: Days of the week enum

Your task is to create an enum that represents the days of the week and contains a few useful properties and functions. Here are the exact instructions:

1. Define an enum class named DayOfWeek with the following days: MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY.
2. Enum elements should be defined in the order they appear in the week.
3. Enum should define a primary constructor with two properties: isWeekend (of type Boolean) indicating whether the day is a weekend day (Saturday or Sunday) and dayName (of type String) containing the full name of the day.
4. Implement a function named nextDay that takes a DayOfWeek as input and returns the next day in the sequence. For example, if the input is MONDAY, the function should return TUESDAY.

The following code should work:

val friday: DayOfWeek = DayOfWeek.FRIDAY
println(friday.dayName) // Friday
println(friday.isWeekend) // false
val saturday: DayOfWeek = friday.nextDay()
println(saturday.dayName) // Saturday
println(saturday.isWeekend) // true

This problem can either be solved in the below playground or you can clone kotlin-exercises project and solve it locally. In the project, you can find code template for this exercise in essentials/enums/DayOfWeek.kt. You can find there example usage.

Once you are done with the exercise, you can check your solution here.

Playground

// TODO

fun main() {
    val friday: DayOfWeek = DayOfWeek.FRIDAY
    println(friday.dayName) // Friday
    println(friday.isWeekend) // false
    val saturday: DayOfWeek = friday.nextDay()
    println(saturday.dayName) // Saturday
    println(saturday.isWeekend) // true
}