Function to transform Array<UShort 16bits > into Array <UByte 8bits>

/*
 * Function to transform Array<UShort 16bits > into Array <UByte 8bits>
 * with generic show function Array ..showArray (array:Array<*>)
 * Antonio Villanueva Segura
 */

fun main() {
    //I declare an example Array of unsigned short, Array<UShort>
    var ushortArray=arrayOf<UShort>(0x0102U,0x0304U,0x0506U,0x0708U,0x090AU)
    var ubyteArray =toUByteArray(ushortArray) //Conversion UShortArray to UByteArray

}

/*Function to show an array in hexadecimal */
fun showArray(array: Array<*>){
    println ("${array[0]!!::class.simpleName}")//Analysis of the type of variable

    for (indice in array.indices){//Go through the Array Indices
        print ("["+indice+"]=")
        println ( "0x%x".format  (((array[indice] ).toString()).toInt()))
    }
}


/* Function to transform Array<UShort> in Array<UByte> ..Receive an UShortArray retuns UByteArray*/
fun toUByteArray(ushortArray:Array<UShort>):Array<UByte>{

    //Initialize a UByte(8) Array to the size of UShort(16) Array * 2
    var ubyteArray=Array<UByte>(ushortArray.size * 2){0U}

    var index=0
    for (elem in ushortArray){//Walk through the UShort array
        //recovers elem 16bits for write two bytes in Array<UByte>
        ubyteArray[index++]= (elem.toInt().shr(8)).toUByte()
        ubyteArray[index++]= elem.toUByte()
    }

    showArray(ushortArray) //Debug show Array<UShort>
    showArray(ubyteArray) //Debug show Array<UByte>
    return ubyteArray
}