Introduction - If you have any usage issues, please Google them yourself
large integer multiplication example code/* Recursive border, if it is a binary number with a binary number multiplication, can be directly calculated*//* the beginning of a binary multiplication of the number*//* return (X* Y)*//* calculate the value of n*//* X and Y to split it so that X = A* 2 ^ (n/2) B, the left shift operator, mod = 1LT; lt; (n/2)*//* calculate XY = AC* 2 ^ n (AD CB)* 2 ^ (n/2) BD*//* A* C calculation, further n-bits*//* recursive computation A* D*//* recursive calculation of C* B*//* Calculation A21 A22 and then bits n/2*//* recursive calculation B* D*//* XY = a1 a2 a3* /
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BigIntMultiplication.java