给定数字N。任务是编写一个程序来查找以下系列中的第N个术语:
2, 4, 3, 4, 15...
例子:
Input: N = 5
Output: 15
Explanation:
For N = 5,
Nth term = ( N * ( (N%2) + (N%3) )
= ( 5 * ( (5%2) + (5%3) )
= ( 5 * ( 1 + 2 )
= 15
Input: N = 4
Output: 4
该系列的广义第N个术语:
Nth term = ( N * ( (N%2) + (N%3) ) )
下面是上述方法的实现:
C++
// CPP program to find N-th term of the series:
// 2, 4, 3, 4, 15...
#include
using namespace std;
// function to calculate Nth term of series
int nthTerm(int N)
{
// By using above formula
return (N * ((N % 2) + (N % 3)));
}
// Driver Function
int main()
{
// get the value of N
int N = 5;
// Calculate and print the Nth term
cout << "Nth term for N = "
<< N << " : "
<< nthTerm(N);
return 0;
}
Java
import java.io.*;
// Class to calculate Nth term of series
class Nth {
public int nthTerm(int N)
{
// By using above formula
return (N * ((N % 2) + (N % 3)));
}
}
// Main class for main method
class GFG {
public static void main(String[] args)
{
// get the value of N
int N = 5;
// create object of Class Nth
Nth a = new Nth();
// Calculate and print the Nth term
System.out.println("Nth term for N = "
+ N + " : "
+ a.nthTerm(N));
}
}
Python3
# Python3 program to find N-th term of the series:
# 2, 4, 3, 4, 15...
# function to calculate Nth term of series
def nthTerm( N):
# By using above formula
return (N * ((N % 2) + (N % 3)))
# Driver Function
# get the value of N
if __name__=='__main__':
N = 5
# Calculate and print the Nth term
print("Nth term for N = ", N , " : ",nthTerm(N))
# This code is contributed by ash264
C#
// C# program to find
// N-th term of the series:
// 2, 4, 3, 4, 15...
using System;
class GFG
{
public int nthTerm(int N)
{
// By using above formula
return (N * ((N % 2) + (N % 3)));
}
public static void Main()
{
// get the value of N
int N = 5;
GFG a = new GFG();
// Calculate and print the Nth term
Console.Write("Nth term for N = " +
N + " : " +
a.nthTerm(N));
}
}
// This code is contributed
// by ChitraNayal
PHP
Javascript
输出:
Nth term for N = 5 : 15
时间复杂度:O(1)