hdu 1042 N!(大数阶乘)
发布时间:2020-12-14 03:32:51 所属栏目:大数据 来源:网络整理
导读:链接:hdu 1042 Problem Description Given an integer N(0 ≤ N ≤ 10000),your task is to calculate N! ? Input One N in one line,process to the end of file. ? Output For each N,output N! in one line. ? Sample Input 123 ? Sample Output 126 ?
链接:hdu 1042
Problem Description
Given an integer N(0 ≤ N ≤ 10000),your task is to calculate N!
?
Input
One N in one line,process to the end of file.
?
Output
For each N,output N! in one line.
?
Sample Input
?
Sample Output
?
模拟算数乘法,将每一位与乘数相乘,记录进位。
AC代码:
#include<stdio.h> #include<string.h> int s[10010]; int main() { int i,j,n,m,c; while(scanf("%d",&n)!=EOF){ memset(s,sizeof(s)); s[0]=1; c=0; for(i=2;i<=n;i++) for(j=0;j<=10000;j++){ m=s[j]*i+c; s[j]=m%10000; //如果用char 处理,m只需对10取余或除以10 c=m/10000; } for(i=10000;i>=0;i--) //处理前导0 if(s[i]!=0) break; printf("%d",s[i]); //不能有前导0 for(i--;i>=0;i--) printf("%04d",s[i]); //中间的0不能省略 printf("n"); } return 0; } (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |