在Java/Scala中将Unicode(CJK ExtB)字符转换为十进制NCR

object UnicodeToNCR {
  def main(args: Array[String]): Unit = {
    val input = "你好，世界！"
    val output = convertUnicodeToNCR(input)
    println(s"输入字符串: $input")
    println(s"输出字符串: $output")
  }

  def convertUnicodeToNCR(input: String): String = {
    val sb = new StringBuilder()
    for (i <- 0 until input.length) {
      val ch = input.charAt(i)
      val codePoint = input.codePointAt(i)
      sb.append(Integer.toChars(codePoint))
    }
    sb.toString()
  }
}