📜  十六进制数

📅  最后修改于: 2021-06-25 16:22:06             🧑  作者: Mango

给定数字n,任务是找到第n个十六进制数字。
六边形数是类比数和一个完美的正方形。它有16个面的多边形,称为六边形或六边形。第n个十六进制数计数是点的十六个数,所有其他点都围绕其连续层。
例子 :

数字

计算十六进制数的公式:

\begin{math}  Hg_{n}=(14n^2-12n)/2 \end{math}

C++
// C++ program to find Nth
// hexadecagon number
#include 
using namespace std;
 
// Function to calculate hexadecagonal number
int hexadecagonalNum(long int n)
{
    return ((14 * n * n) - 12 * n) / 2;
}
 
// Drivers Code
int main()
{
    long int n = 5;
    cout << n << "th Hexadecagonal number : ";
    cout << hexadecagonalNum(n);
    cout << endl;
    n = 9;
    cout << n << "th Hexadecagonal number : ";
    cout << hexadecagonalNum(n);
 
    return 0;
}


Java
// Java program to find Nth hexadecagon
// number
import java.io.*;
 
class GFG {
 
    // Function to calculate hexadecagonal
    // number
    static long hexadecagonalNum(long n)
    {
        return ((14 * n * n) - 12 * n) / 2;
    }
     
    // Drivers Code
    public static void main (String[] args)
    {
        long n = 5;
        System.out.println( n + "th "
          + "Hexadecagonal number : "
              + hexadecagonalNum(n));
               
        n = 9;
        System.out.println( n + "th "
          + "Hexadecagonal number : "
              + hexadecagonalNum(n));
    }
}
 
// This code contribued by anuj_67.


Python3
# Python program to find Nth
# hexadecagon number
 
# Function to calculate
# hexadecagonal number
def hexadecagonalNum(n):
 
    # Formula to calculate nth
    # Centered hexadecagonal number
    return ((14 * n * n) - 12 * n) // 2
 
# Driver Code
n = 5
print("%sth Hexadecagonal number : " %n,
                    hexadecagonalNum(n))
n = 9
print("%sth Hexadecagonal number : " %n,
                    hexadecagonalNum(n))
                     
# This code is contributed by ajit


C#
// C# program to find Nth hexadecagon
// number
using System;
class GFG {
 
    // Function to calculate hexadecagonal
    // number
    static long hexadecagonalNum(long n)
    {
        return ((14 * n * n) - 12 * n) / 2;
    }
     
    // Drivers Code
    public static void Main ()
    {
        long n = 5;
        Console.WriteLine( n + "th "
        + "Hexadecagonal number : "
            + hexadecagonalNum(n));
             
        n = 9;
        Console.WriteLine( n + "th "
        + "Hexadecagonal number : "
            + hexadecagonalNum(n));
    }
}
 
// This code contribued by anuj_67.


PHP


Javascript


输出 :

5th Hexadecagonal number : 145
9th Hexadecagonal number : 513

参考:https://en.wikipedia.org/wiki/Polygonal_number