Day of the week Koitlin

Question

fun main(args: Array<String>) {
val names = arrayOf(0, "Sunday","Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
var day = readLine()!!.toInt()
when {
day == 0 -> println("Invalid day")
day == 1 -> println(names[1])
day == 2 -> println(names[2])
day == 3 -> println(names[3])
day == 4 -> println(names[4])
day == 5 -> println(names[5])
day == 6 -> println(names[6])
day == 7 -> println(names[7])
else -> println("Invalid day")
}
}

It is saying Thursday should be Friday

Answer 1

The problem assume that Sunday is index 0, Monday is index 1 and so on... So it should be like this

fun main(args: Array<String>) {
val names = arrayOf("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
var day = readLine()!!.toInt()
when {
day == 0 -> println(names[0])
day == 1 -> println(names[1])
day == 2 -> println(names[2])
day == 3 -> println(names[3])
day == 4 -> println(names[4])
day == 5 -> println(names[5])
day == 6 -> println(names[6])
// day == 7 -> println(names[7])
else -> println("Invalid day")
}
}

Answer 2

It is now solved. Thanks.

Answer 3

fun main(args: Array<String>) {
val names = arrayOf("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
var day = readLine()!!.toInt()

println(names[day])

}

Why this code doesnˋt work in all cases? I donˋt understand

Answer 4

Thomas Grauel you didn't put any statement for printing invalid day
Try this
fun main(args: Array<String>) {
val names = arrayOf("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
var day = readLine()!!.toInt()
if(day<8)
println(names[day])
else
println("Invalid day")

}

Answer 5

Thanks thats the solition ! :) thanks