常见算法设计与分析源代码，包括背包问题，n皇后问题，大整数乘法，阶乘问题，汉诺塔等-Common algorithm design and analysis of source code, including the knapsack problem, n queens problem, large integer multiplication, factorial problem, Tower of Hanoi, etc.

快速求得整数乘法逆元的算法,对于提高加密算法的运算效率有帮助()