Kotlin: varargs : Variable number of arguments

By using 'vararg' modifier, you can define a function that takes variable number of arguments. If you would like to know, basics of vararg in Java, you can go through my below post.

https://self-learning-java-tutorial.blogspot.com/2014/02/varargs-methods-with-variable-number-of.html

Ex

fun sumOf(vararg numbers: Int): Int {

}

Above function takes variable number of integer arguments and return an integer.

VarargsDemo.kt

fun sumOf(vararg numbers: Int): Int {
 var sum: Int = 0;

 for (i in numbers) {
  sum = sum + i
 }

 return sum
}

fun main(args: Array<String>) {
 println("Sum of (1, 2, 3) : ${sumOf(1, 2, 3)}")
 println("Sum of (13, 22, 13, 5, 3) : ${sumOf(13, 22, 13, 5, 3)}")
}

Output

Sum of (1, 2, 3) : 6
Sum of (13, 22, 13, 5, 3) : 56

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