Question

How to check if a string contains only letters and numbers using RegEx in Kotlin

Answer 1

fun isAlphanumeric(str: String): Boolean {
    // Define the regular expression for alphanumeric characters
    val alphanumericRegex = "^[a-zA-Z0-9]+$".toRegex()

    // Use matches to check if the string matches the pattern
    return alphanumericRegex.matches(str)
}

fun main() {
    val str = "VuZ3q7J4wo35Pi"

    if (isAlphanumeric(str)) {
        println("The string contains only letters and numbers.")
    } else {
        println("The string contains characters other than letters and numbers.")
    }
}


     
/*
run:
  
The string contains only letters and numbers.
 
*/

 

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