Question

How to check if a string contains identical digits in Kotlin

Answer 1

fun isStringContainIdenticalDigits(s: String): Boolean {
    return s.toSet().size == 1
}

fun main() {
    val s1 = "88888888"
    println(isStringContainIdenticalDigits(s1)) 

    val s2 = "999999991"
    println(isStringContainIdenticalDigits(s2))
}



 
/*
run:

true
false
 
*/

 

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