Kotlin List size
Syntax & Examples

Syntax of List.size

The syntax of List.size property is:

abstract val size: Int

This size property of List returns the size of the collection.


✐ Examples

1 Get size of a list of numbers

In this example,

  • We create a list named list1 containing the integers 1, 2, 3.
  • We then access the size property of list1 to get the number of elements in the list.
  • The size of list1 is printed to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val list1 = listOf(1, 2, 3);
    val size = list1.size
    print(size);
}

Output

3

2 Get size of a list of characters

In this example,

  • We create a list named list2 containing the strings 'a', 'b', 'c'.
  • We then access the size property of list2 to get the number of elements in the list.
  • The size of list2 is printed to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val list2 = listOf(&quot;a&quot;, &quot;b&quot;, &quot;c&quot;);
    val size = list2.size
    print(size);
}

Output

3

3 Get size of a list of strings

In this example,

  • We create a list named list3 containing the strings 'apple', 'banana', 'cherry'.
  • We then access the size property of list3 to get the number of elements in the list.
  • The size of list3 is printed to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val list3 = listOf(&quot;apple&quot;, &quot;banana&quot;, &quot;cherry&quot;);
    val size = list3.size
    print(size);
}

Output

3

Summary

In this Kotlin tutorial, we learned about size property of List: the syntax and few working examples with output and detailed explanation for each example.