在不截断前导零的情况下，使用C＃将String从String转换为BigInteger。

Question

正在做一个项目，我需要在两个相似的168个字符位数组之间进行按位运算。我在C＃中工作，当我尝试从String转换为BigInteger时，前导零被截断。我有什么办法可以保存这些字符？

基本上：

string bits = "000000000000000000000000000000000000000000000000000000000000000000001111111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"

BigInteger bigIntBits = BigInteger.Parse(bits);
// I am being returned 1111111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"

任何事情都会有所帮助。先感谢您。

Answer 1

您可以简单地执行以下操作：

string bits = "000000000000000000000000000000000000000000000000000000000000000000001111111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000";
 // convert to big integer
 var bigIntBits = BigInteger.Parse(bits);
 int index = bits.IndexOf('1');            
 string backToString = new string('0', index) + bigIntBits.ToString();