如何在 Java 中将二进制数转换为 BigInteger?

2022-01-09 00:00:00 binary biginteger java

我需要将一个非常大的二进制值转换为其十进制等效值.因为它是一个大整数，所以我使用的是 BigInteger.那么如何将此二进制数转换为 BigInteger?

I needed to convert a very big binary value into its decimal equivalent. As it is a big integer I was using BigInteger. So how do I convert this binary number to a BigInteger?

推荐答案

如果你有二进制数的 String 表示，将它提供给这个重载的 BigInteger 构造函数以创建一个实例:

If you have the String representation of your binary number, provide it to this overloaded BigInteger constructor to create an instance:

BigInteger(String val, int radix);

在你的情况下，基数显然是 2，即你可以使用这样的东西:

In your case, radix is clearly 2, i.e. you can use something like this:

BigInteger yourNumber = new BigInteger("101000101110...1010", 2);

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