How to Access Items in a Set in Kotlin - Step by Step Examples

How to Access Items in a Set in Kotlin ?

Answer

To access items in a Set in Kotlin, you can use various methods such as iterating over the set or using specific methods like contains to check for item existence.

✐ Examples

1 Iterate Over Items in a Set

In this example,

We create a Set named fruitSet with some initial values.
We use a for loop to iterate over each item in the set.
Within the loop, we print each item to the standard output.

Kotlin Program

fun main() {
    val fruitSet = setOf("Apple", "Banana", "Cherry")

    for (fruit in fruitSet) {
        println(fruit)
    }
}

Output

Apple
Banana
Cherry

2 Check if Set Contains an Item

In this example,

We create a Set named numberSet with some initial values.
We use the contains method to check if an item exists in the set.
The contains method returns true if the item is in the set, otherwise false.

Kotlin Program

fun main() {
    val numberSet = setOf(1, 2, 3, 4, 5)

    val containsThree = numberSet.contains(3)
    println("Set contains 3: $containsThree")
}

Output

Set contains 3: true

3 Access Item by Index (Not Directly Supported)

In this example,

In Kotlin, Sets are unordered collections, so direct indexing is not supported.
To access items by index, you can convert the set to a List and then use indexing on the List.

Kotlin Program

fun main() {
    val colorSet = setOf("Red", "Green", "Blue")
    val colorList = colorSet.toList()

    val secondColor = colorList.getOrNull(1)
    println("Second color in set: $secondColor")
}

Output

Second color in set: Green

Summary

In this tutorial, we learned How to Access Items in a Set in Kotlin language with well detailed examples.

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How to Access Items in a Set in Kotlin - Step by Step Examples

How to Access Items in a Set in Kotlin ?

Answer

✐ Examples

1 Iterate Over Items in a Set

Kotlin Program

Output

2 Check if Set Contains an Item

Kotlin Program

Output

3 Access Item by Index (Not Directly Supported)

Kotlin Program

Output

Summary

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