func hashByDivisionMethod(key string, primeNumber int) int32 {
   keyChars := []rune(key)
   var keyChar int32
   var hash int32
   for i := 0; i < len(keyChars); i++ {
	keyChar = keyChars[i]
	hash = (hash + keyChar) % int32(primeNumber)
    }
    return hash
}