Converting a Map to a List in Kotlin is a common task in software development.
In this tutorial, we will go through the steps to do so.
First, let’s understand the difference between a Map and a List in Kotlin.
A Map is a collection that stores key-value pairs, while a List is a collection that stores elements in a specific order.
The Map data structure is useful when we need to store and retrieve data based on a unique identifier, while the List is useful when we need to maintain an ordered sequence of data.
To convert a Map to a List, we can make use of the toList() function that is available on the Map class in Kotlin.
This function returns a List of pairs, where each pair consists of a key and its corresponding value from the Map.
Here’s an example program that demonstrates how to convert a Map to a List in Kotlin:
fun main() {
val map = mapOf(
1 to "One",
2 to "Two",
3 to "Three"
)
val list = map.toList()
println(list)
}
In this program, we have defined a Map that stores three key-value pairs.
We then call the toList() function on the map, which returns a List of pairs.
We store this List in a variable called list and print it to the console.
The output of the program will be:
[(1, One), (2, Two), (3, Three)]
As you can see, the toList() function has successfully converted the Map to a List of pairs.
In conclusion, converting a Map to a List in Kotlin is a simple task that can be accomplished using the toList() function available on the Map class.
This function returns a List of pairs, where each pair consists of a key and its corresponding value from the Map.
