随笔分类 -  组合

摘要：设多重集的个数n = n1 + n2 + ... + nk;则该多重集的排列个数为：n!/(n1!n2!...nk!).//组合数+java大数import java.util.Scanner;import java.math.BigInteger;public class hdu1261{ public static void main(String args[]) { Scanner cin = new Scanner(System.in); BigInteger f1, f2; int []s = new int[26]; int n, sum; n = cin.nextIn... 阅读全文