Looking to get a head start on your next software interview? Pickup a copy of the best book to prepare: Cracking The Coding Interview!
The `joinToString()` method takes several parameters, including the separator, prefix, postfix, and limit. The separator parameter specifies the string to use between each element in the array. The prefix and postfix parameters specify the string to use before and after the entire string, respectively. The limit parameter specifies the maximum number of elements to include in the resulting string.
Here’s an example of how to use the `joinToString()` method in Kotlin:
val array = arrayOf("apple", "banana", "cherry")
val result = array.joinToString(separator = ", ")
println(result) // Output: "apple, banana, cherry"
In this example, we create an array of strings and then use the `joinToString()` method to convert it into a single string with each element separated by a comma and a space.
By default, the `joinToString()` method uses a comma as the separator and does not include a prefix, postfix, or limit. However, you can customize these parameters to fit your specific needs.
Overall, the `joinToString()` method is a powerful tool for converting arrays into strings in Kotlin.