Introduction - If you have any usage issues, please Google them yourself
With an integer array to represent a large number, every element of the array storage of large numbers of one digit, the actual large number d is expressed as: d = a [k]* 10 of the k-1 th power+ a [k-1] k-2* 10 plays a power+......+ a [2]* 10+ a [1] where a [0] save the large number of bits. (2), to achieve multiply two large numbers. (3), based on which further divided the two large numbers