How to create a Set of Sets in Kotlin

How to create a Set of Sets in Kotlin ?

Answer

To create a Set of Sets in Kotlin, you can use the setOf() function to create individual sets and then nest them within another set using the same function.

✐ Examples

1 Creating a Set of Sets of Integers

In this example,

First, we create three individual sets of integers named set1, set2, and set3 using the setOf() function. set1 contains the elements 1, 2, 3, set2 contains the elements 4, 5, 6, and set3 contains the elements 7, 8, 9.
Next, we create a set of sets named setOfSets using the setOf() function, passing set1, set2, and set3 as arguments. This will nest the three sets within a single set.
We then use a for loop to iterate over each set within setOfSets. Within the loop, we print each individual set to standard output.

Kotlin Program

fun main() {
    val set1 = setOf(1, 2, 3)
    val set2 = setOf(4, 5, 6)
    val set3 = setOf(7, 8, 9)
    val setOfSets = setOf(set1, set2, set3)
    for (set in setOfSets) {
        println(set)
    }
}

Output

Output:
[1, 2, 3]
[4, 5, 6]
[7, 8, 9]

2 Creating a Set of Sets of Strings

In this example,

First, we create three individual sets of strings named setA, setB, and setC using the setOf() function. setA contains the elements "apple", "banana", "cherry", setB contains the elements "dog", "elephant", "fox", and setC contains the elements "grape", "honeydew", "kiwi".
Next, we create a set of sets named setOfStringSets using the setOf() function, passing setA, setB, and setC as arguments. This will nest the three sets within a single set.
We then use a for loop to iterate over each set within setOfStringSets. Within the loop, we print each individual set to standard output.

Kotlin Program

fun main() {
    val setA = setOf("apple", "banana", "cherry")
    val setB = setOf("dog", "elephant", "fox")
    val setC = setOf("grape", "honeydew", "kiwi")
    val setOfStringSets = setOf(setA, setB, setC)
    for (set in setOfStringSets) {
        println(set)
    }
}

Output

Output:
[apple, banana, cherry]
[dog, elephant, fox]
[grape, honeydew, kiwi]

Summary

In this tutorial, we learned How to create a Set of Sets in Kotlin language with well detailed examples.

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How to create a Set of Sets in Kotlin

How to create a Set of Sets in Kotlin ?

Answer

✐ Examples

1 Creating a Set of Sets of Integers

Kotlin Program

Output

2 Creating a Set of Sets of Strings

Kotlin Program

Output

Summary

More Kotlin Sets Tutorials