How to Convert a Set of Strings to a Set of Integers in Kotlin - Step by Step Examples

How to Convert a Set of Strings to a Set of Integers in Kotlin ?

Answer

In Kotlin, you can convert a set of strings to a set of integers by iterating over each element of the string set and converting it to an integer using the toInt() method or Integer.parseInt() function.

✐ Examples

1 Convert a Set of Strings to a Set of Integers using toInt() Method

In this example,

We have a set of strings named stringSet1 containing the elements "1", "2", "3", "4", "5".
We create an empty set named intSet1.
We iterate over each element of stringSet1 using a forEach loop.
Inside the loop, we convert each string element to an integer using the toInt() method and add it to the intSet1.
We print the resulting intSet1 to standard output.

Kotlin Program

fun main() {
    val stringSet1 = setOf("1", "2", "3", "4", "5")
    val intSet1 = mutableSetOf<Int>()

    stringSet1.forEach {
        intSet1.add(it.toInt())
    }

    println("Converted int set: $intSet1")
}

Output

Converted int set: [1, 2, 3, 4, 5]

2 Convert a Set of Strings to a Set of Integers using Integer.parseInt() Function

In this example,

We have a set of strings named stringSet2 containing the elements "10", "20", "30", "40", "50".
We create an empty set named intSet2.
We iterate over each element of stringSet2 using a forEach loop.
Inside the loop, we convert each string element to an integer using the Integer.parseInt() function and add it to the intSet2.
We print the resulting intSet2 to standard output.

Kotlin Program

fun main() {
    val stringSet2 = setOf("10", "20", "30", "40", "50")
    val intSet2 = mutableSetOf<Int>()

    stringSet2.forEach {
        intSet2.add(Integer.parseInt(it))
    }

    println("Converted int set: $intSet2")
}

Output

Converted int set: [10, 20, 30, 40, 50]

Summary

In this tutorial, we learned How to Convert a Set of Strings to a Set of Integers in Kotlin language with well detailed examples.

◀ Previous Next ▶

Kotlin Tutorials

Kotlin How-Tos

How to Convert a Set of Strings to a Set of Integers in Kotlin - Step by Step Examples

How to Convert a Set of Strings to a Set of Integers in Kotlin ?

Answer

✐ Examples

1 Convert a Set of Strings to a Set of Integers using toInt() Method

Kotlin Program

Output

2 Convert a Set of Strings to a Set of Integers using Integer.parseInt() Function

Kotlin Program

Output

Summary

More Kotlin Sets Tutorials