BigInteger如何存储其数据？

Question

我一直在寻找相当长的一段时间,而且我几乎没有发现BigInteger它实际上如何保持它的数字.它们是一系列字符吗？别的什么？如何将数据转换为/从BigInteger？

从我发现的,我假设所有任意精度类,如BigInteger和BigDecimal,将数据保存为字符数组.它是如何实际工作的？还是只是人们的猜测？

我问,因为我一直在努力实现自己的实现BigInteger,但我无法弄清楚如何保持数字大于Long.MAX_VALUE(我不记得实际的数字).

提前致谢.

Answer 1

与 int[]

从来源:

/**
 * The magnitude of this BigInteger, in <i>big-endian</i> order: the
 * zeroth element of this array is the most-significant int of the
 * magnitude.  The magnitude must be "minimal" in that the most-significant
 * int ({@code mag[0]}) must be non-zero.  This is necessary to
 * ensure that there is exactly one representation for each BigInteger
 * value.  Note that this implies that the BigInteger zero has a
 * zero-length mag array.
 */
final int[] mag;