📜  七边形数

📅  最后修改于: 2021-04-24 04:13:36             🧑  作者: Mango

给定数字N ,任务是找到N六边形数字。

例子:

方法:第N个六边形数由下式给出:

  • 侧多边形的第N个项= \frac{((s-2)n^2 - (s-4)n)}{2}
  • 因此,第100个面多边形的第N个项是

下面是上述方法的实现:

C++
// C++ program for above approach
#include 
using namespace std;
 
// Finding the nth hectagon Number
int hectagonNum(int n)
{
    return (98 * n * n - 96 * n) / 2;
}
 
// Driver Code
int main()
{
    int n = 3;
    cout << "3rd hectagon Number is = "
         << hectagonNum(n);
 
    return 0;
}
 
// This code is contributed by shivanisinghss2110


C
// C program for above approach
#include 
#include 
 
// Finding the nth hectagon Number
int hectagonNum(int n)
{
    return (98 * n * n - 96 * n) / 2;
}
 
// Driver program to test above function
int main()
{
    int n = 3;
    printf("3rd hectagon Number is = %d",
           hectagonNum(n));
 
    return 0;
}


Java
// Java program for above approach
import java.util.*;
class GFG{
 
// Finding the nth hectagon Number
static int hectagonNum(int n)
{
    return (98 * n * n - 96 * n) / 2;
}
 
// Driver Code
public static void main(String args[])
{
    int n = 3;
    System.out.print("3rd hectagon Number is = " +
                                  hectagonNum(n));
}
}
 
// This code is contributed by Akanksha_Rai


Python3
# Python3 program for above approach
 
# Finding the nth hectagon number
def hectagonNum(n):
 
    return (98 * n * n - 96 * n) // 2
 
# Driver code
n = 3
print("3rd hectagon Number is = ",
                   hectagonNum(n))
 
# This code is contributed by divyamohan123


C#
// C# program for above approach
using System;
class GFG{
 
// Finding the nth hectagon Number
static int hectagonNum(int n)
{
    return (98 * n * n - 96 * n) / 2;
}
 
// Driver Code
public static void Main()
{
    int n = 3;
    Console.Write("3rd hectagon Number is = " +
                               hectagonNum(n));
}
}
 
// This code is contributed by Akanksha_Rai


Javascript


输出:
3rd hectagon Number is = 297

参考: https : //en.wiktionary.org/wiki/hectagon