Question

How to count the unique words in a string with Kotlin

Answer 1

fun countUniqueWords(input: String): Int {
    val words = input.split("\\s+".toRegex())
    
    val uniqueWords = words.toSet()
    
    return uniqueWords.size
}

fun main() {
    val s = "Kotlin programming language is a general-purpose programming language"
    
    println("Number of unique words: ${countUniqueWords(s)}")
}


 
/*
run:
 
Number of unique words: 6
 
*/

 

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