[算法]数学 [题解]斯特林公式: #include<cstdio> #include<algorithm> #include<cmath> using namespace std; const double pi=3.1415926535898,e=2.718281828459; int main() { int t; scanf("%d",&t); ;i<=t;i++) { long long n; scanf("%lld…
Big Number Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 27027 Accepted: 8626 Description In many applications very large integers numbers are required. Some of these applications are using keys for secure transmission of data, encry…
How Many Digits? Often times it is sufficient to know the rough size of a number, rather than its exact value. For example, a human can reason about which store to visit to buy milk if one store is roughly 11 kilometer away, and another store is roug…
循环从1乘到20,要注意的就是结果可能会很大,长度超出int类型的范围,所以定义乘积的时候用long. 代码如下: public class Practice3 { public static void main(String args[]){ long result=1; for(int i=1;i<=20;i++) result=result*i; System.out.println("20的阶乘为"+result); } } 效果如图:…
窗体设计: 代码: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsAppl…