Kotlin Basic Programs for Beginners

What is the output of the following Kotlin code?

fun main() {
val nums = arrayOf(1, 2, 3, 4, 5)
val result = nums.filter { it % 2 == 0 }
println(result)
}

What is the output of the following Kotlin code?

fun main() {
val nums = arrayOf(1, 2, 3, 4, 5)
val result = nums.all { it % 2 == 0 }
println(result)
}

What is the output of the following Kotlin code?

fun main() {
val name: String? = null
println(name?.length ?: -1)
}

What is the output of the following Kotlin code?

fun main() {
val nums = arrayOf(1, 2, 3, 4, 5)
val result = nums.last { it % 2 == 0 }
println(result)
}

What is the output of the following Kotlin code?

fun main() {
val nums = arrayOf(1, 2, 3, 4, 5)
val result = nums.sum()
println(result)
}

What is the output of the following Kotlin code?

fun main() {
val num1 = 10
val num2 = 20
val result = if (num1 > num2) "num1 is greater than num2" else "num2 is greater than num1"
println(result)
}

What is the output of the following Kotlin code?

fun main() {
val str = "hello, world"
val result = str.split(" ")
println(result)
}

What is the output of the following Kotlin code?

fun main() {
val nums = arrayOf(1, 2, 3, 4, 5)
val sum = nums.fold(0) { acc, num -> acc + num }
println(sum)
}

What is the output of the following Kotlin code?

fun main() {
val nums = arrayOf(1, 2, 3, 4, 5)
val result = nums.max()
println(result)
}

What is the output of the following Kotlin code?

fun main() {
val str = "hello, world"
val result = str.filter { it.isLetter() }
println(result)
}