How to check if a List contains all the elements of Another List in Kotlin

How to check if a List contains all the elements of Another List in Kotlin ?

Answer

To check if a List contains all the elements of another List in Kotlin, you can use the containsAll method of the List interface.

✐ Examples

1 Check if List Contains All Elements of Another List (Integers)

In this example,

We create two Lists named list1 and list2 containing integers.
We use the containsAll method of list1 to check if it contains all elements of list2.
The containsAll method returns true if all elements of list2 are present in list1; otherwise, it returns false.
Finally, we print the result to standard output.

Kotlin Program

fun main() {
    val list1 = listOf(1, 2, 3, 4, 5)
    val list2 = listOf(2, 4)
    val result = list1.containsAll(list2)
    println("List 1 contains all elements of List 2: $result")
}

Output

List 1 contains all elements of List 2: true

2 Check if List Contains All Elements of Another List (Strings)

In this example,

We create two Lists named list1 and list2 containing strings.
We use the containsAll method of list1 to check if it contains all elements of list2.
The containsAll method returns true if all elements of list2 are present in list1; otherwise, it returns false.
Finally, we print the result to standard output.

Kotlin Program

fun main() {
    val list1 = listOf("apple", "banana", "orange", "kiwi")
    val list2 = listOf("banana", "kiwi")
    val result = list1.containsAll(list2)
    println("List 1 contains all elements of List 2: $result")
}

Output

List 1 contains all elements of List 2: true

Summary

In this tutorial, we learned How to check if a List contains all the elements of Another List in Kotlin language with well detailed examples.

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How to check if a List contains all the elements of Another List in Kotlin

How to check if a List contains all the elements of Another List in Kotlin ?

Answer

✐ Examples

1 Check if List Contains All Elements of Another List (Integers)

Kotlin Program

Output

2 Check if List Contains All Elements of Another List (Strings)

Kotlin Program

Output

Summary

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