Transform String -> to Array<UShort> -> to Array <UByte>

/*
 * Transform  Array<UShort> to Array <UByte>
 * Antonio Villanueva Segura
 */

fun main() {
    var str="abcdefg" //Test string array

    var arrayUShort=toUShortArray(str) //String to UShort array
    printArrayUShort (arrayUShort)//Show UShort array

    var arrayUByte=toUByteArray(arrayUShort)//UShort array to UByte array
    printArray(arrayUByte)//Show UByte array

}


//String ->  Char -> to  UShort
fun toUShortArray(s:String):Array <UShort>{
    var arrayUshort = Array<UShort> (s.length){0U} //Same size like string array

    for (i in s.indices){//loop through the  string array
        //arrayUshort[i]=s[i].toShort().toUShort()
        arrayUshort[i]=s[i].code.toUShort()
    }
    return arrayUshort
}


//Transform  UShort array -> UByte array
fun toUByteArray (a:Array<UShort>):Array<UByte>{

    var arrayUbyte=Array<UByte> (a.size * 2){0U}//El doble

    for (i in a.indices ){
        arrayUbyte[i*2+0]=a[i].toInt().shr(8).toUByte()
        arrayUbyte[i*2+1]=a[i].toUByte()
    }
    return arrayUbyte
}


//Show UByte array
fun printArray(a:Array<UByte>){
    println ("Type = ${(a[0]::class.simpleName)}" )
    for (e in a){
        println ("0x%02x".format (e.toInt()))
    }
}

//Show UByte array
fun printArrayUShort(a:Array<UShort>){
    println ("Type = ${(a[0]::class.simpleName)}" )
    for (e in a){
        println ("0x%04x".format (e.toInt()))
    }
}