Question

How to count the number of characters in a string without spaces and special characters in Kotlin

Answer 1

fun countAlphanumericCharacters(str: String): Int {
    // Use a regular expression to remove non-alphanumeric characters
    val cleanedString = str.replace(Regex("[^A-Za-z0-9]"), "")

    return cleanedString.length
}

fun main() {
    val str = "(Kotlin), @#Programming: Language."
    
    val count = countAlphanumericCharacters(str)
    
    println("Number of characters without spaces and special characters: $count")
}


 
/*
run:

Number of characters without spaces and special characters: 25
 
*/

 

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