How to Concatenate Strings in Array in Kotlin - Step by Step Examples

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How to Concatenate Strings in Array in Kotlin ?

Answer

To concatenate strings in an array in Kotlin, you can use the joinToString method.

✐ Examples

1 Concatenate Strings in Array using joinToString Method

In this example,

We create an array named stringArray containing multiple strings.
We use the joinToString method on stringArray to concatenate its elements into a single string.
The joinToString method allows us to specify a separator between elements, a prefix, a postfix, and other optional parameters.
Finally, we print the concatenated string to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val stringArray = arrayOf("apple", "banana", "orange", "grape", "pineapple")
    val concatenatedString = stringArray.joinToString()
    println("Concatenated string: $concatenatedString")
}

Output

Concatenated string: applebananaorangegrapepineapple

2 Concatenate Strings in Array using Custom Separator

In this example,

We create an array named stringArray containing multiple strings.
We use the joinToString method on stringArray to concatenate its elements into a single string.
The joinToString method allows us to specify a separator between elements, a prefix, a postfix, and other optional parameters.
We shall use the default values for the parameters of the method, and join the elements of the array.
Finally, we print the concatenated string to standard output.

Kotlin Program

fun main(args: Array<String>) {
    val stringArray = arrayOf("apple", "banana", "orange", "grape", "pineapple")
    val concatenatedString = stringArray.joinToString(separator = "-")
    println("Concatenated string with hyphen separator: $concatenatedString")
}

Output

Concatenated string with hyphen separator: apple-banana-orange-grape-pineapple

Summary

In this tutorial, we learned How to Concatenate Strings in Array in Kotlin language with well detailed examples.

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How to Concatenate Strings in Array in Kotlin - Step by Step Examples

How to Concatenate Strings in Array in Kotlin ?

Answer

✐ Examples

1 Concatenate Strings in Array using joinToString Method

Kotlin Program

Output

2 Concatenate Strings in Array using Custom Separator

Kotlin Program

Output

Summary

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