Question

How to validate a 10-digit standard 10 digit phone number using RegEx in Kotlin

Answer 1

fun main() {
    val phoneNumbers = listOf(
        "333-555-1234",
        "(333)-555-1234",
        "333 555 1234",
        "333.555.1234",
        "+91 (333) 555-1234"
    )

    val pattern = Regex("""^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}$""")

    for (phoneNumber in phoneNumbers) {
        if (pattern.matches(phoneNumber)) {
            println("Valid phone number format")
        } else {
            println("Invalid phone number format")
        }
    }
}


   
/*
run:

Valid phone number format
Valid phone number format
Valid phone number format
Valid phone number format
Valid phone number format
 
*/

 

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