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Sort a Map By Values in Kotlin

The easy way to sort Kotlin Map by value is by doing below steps:

  • Convert Map to array using toList() function.
  • Sort converted array using sortedBy.
  • convert sorted array to Map using toMap().

See below example

fun main(args: Array<String>) {

    var capitals = hashMapOf<String, String>()
    capitals.put("User 1", "James Bond")
    capitals.put("User 2", "William Smith")
    capitals.put("User 3", "Joshua Spencer")
    capitals.put("User4", "Robert Williams")
    val result = capitals.toList().sortedBy { (_, value) -> value}.toMap()

    for (entry in result) {
        print("Key: " + entry.key)
        println(" Value: " + entry.value)


Key: User 1 Value: James Bond
Key: User 3 Value: Joshua Spencer
Key: User4 Value: Robert Williams
Key: User 2 Value: William Smith


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