1.概念:模运算是指取模运算,即求m/n的余数。模运算有许多基本规则,熟练掌握可以更好的编程。2.交换律: (a + b) % m = (b + a) % m (a * b) % m = (b * a) % m 3.结合律: [(a+b)%m+c]%m = [a+(b+c)%m]%m [(a*b)%m*c]%m = [(b*c)%m*a]%m 4.分配律: [(a+b)%m * c] % m = [(a*c)%m + (b*c)%m] % m (a+b)%m = (a%m + b%m)%m (a - b)%m = (a%m - b%m)%m (a*b)%m = (a%m * b%m)%m a^b % m = (a%m)^b % m 5.重要结论: