Ad Publisher maker with Adomik

AdView.kt

private fun makePublisherAdView(context: Context, adUnitId: String, adomik: String): PublisherAdView {
    val publisherAdView = PublisherAdView(context)
    publisherAdView.adUnitId = adUnitId
    publisherAdView.setAdSizes(AdSize.MEDIUM_RECTANGLE)
    val adRequest = PublisherAdRequest.Builder().addCustomTargeting("ad_group", adomik)
    publisherAdView.loadAd(adRequest.build())
    return publisherAdView
}

/**
 * Adomik
 * 
 */
fun adomikSplitAdGroup(): String {
    val randomNum = Random().nextInt(98).toDouble() / 100

    return when {
        randomNum < 0.09 -> "ad_ex" + floor(100 * randomNum).toInt().toString()
        randomNum < 0.10 -> "ad_bc"
        else -> "ad_opt"
    }
}