How to check if Two Arrays have Same Elements (Regardless of Order) in Kotlin

How to check if Two Arrays have Same Elements (Regardless of Order) in Kotlin ?

Answer

To check if two arrays have the same elements regardless of order in Kotlin, you can convert both arrays to sets and compare the sets.


✐ Examples

1 Check if Two Arrays of Integers Have Same Elements

In this example,

  1. We create two arrays named arr1 and arr2 with integer values.
  2. We convert both arrays to sets using the toSet method. This step removes any duplicate elements and disregards the order of elements.
  3. We compare the sets using the equality operator ==. If the sets are equal, it means the original arrays have the same elements regardless of order.
  4. Finally, we print the result to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val arr1 = arrayOf(1, 2, 3, 4, 5)
    val arr2 = arrayOf(5, 4, 3, 2, 1)
    val areSame = arr1.toSet() == arr2.toSet()
    println("Do arr1 and arr2 have the same elements: $areSame")
}

Output

Do arr1 and arr2 have the same elements: true

2 Check if Two Arrays of Strings Have Same Elements

In this example,

  1. We create two arrays named arr1 and arr2 with string values.
  2. We convert both arrays to sets using the toSet method. This step removes any duplicate elements and disregards the order of elements.
  3. We compare the sets using the equality operator ==. If the sets are equal, it means the original arrays have the same elements regardless of order.
  4. Finally, we print the result to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val arr1 = arrayOf("apple", "banana", "cherry")
    val arr2 = arrayOf("cherry", "banana", "apple")
    val areSame = arr1.toSet() == arr2.toSet()
    println("Do arr1 and arr2 have the same elements: $areSame")
}

Output

Do arr1 and arr2 have the same elements: true

3 Check if Two Arrays of Integers Do Not Have Same Elements

In this example,

  1. We create two arrays named arr1 and arr2 with integer values.
  2. We convert both arrays to sets using the toSet method. This step removes any duplicate elements and disregards the order of elements.
  3. We compare the sets using the equality operator ==. If the sets are not equal, it means the original arrays do not have the same elements regardless of order.
  4. Finally, we print the result to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val arr1 = arrayOf(1, 2, 3, 4, 5)
    val arr2 = arrayOf(1, 2, 3, 6, 7)
    val areSame = arr1.toSet() == arr2.toSet()
    println("Do arr1 and arr2 have the same elements: $areSame")
}

Output

Do arr1 and arr2 have the same elements: false

4 Check if Two Arrays of Strings Do Not Have Same Elements

In this example,

  1. We create two arrays named arr1 and arr2 with string values.
  2. We convert both arrays to sets using the toSet method. This step removes any duplicate elements and disregards the order of elements.
  3. We compare the sets using the equality operator ==. If the sets are not equal, it means the original arrays do not have the same elements regardless of order.
  4. Finally, we print the result to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val arr1 = arrayOf("apple", "banana", "cherry")
    val arr2 = arrayOf("apple", "banana", "date")
    val areSame = arr1.toSet() == arr2.toSet()
    println("Do arr1 and arr2 have the same elements: $areSame")
}

Output

Do arr1 and arr2 have the same elements: false

Summary

In this tutorial, we learned How to check if Two Arrays have Same Elements (Regardless of Order) in Kotlin language with well detailed examples.


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