0, 0, 2, 1, 4, 2, 6, 3, 8, 4, 10, 5, 12, 6, 14, 7, 16, 8 This series is a mixture of 2 series all the odd terms in this series form even numbers in ascending order and every even terms is derived from the previous term using the formula (x/2)
Consider the below series :
0,0,2,1,4,2,6,3,8,4,10,5,12,6,14,7,16,8
- This series is a mixture of 2 series all the odd terms in this series form even numbers in ascending order
- Every even terms is derived from the previous term using the formula (x/2)
Write a program to find the nth term in this series.
- The value n in a positive integer that should be read from STDIN the nth term that is calculated by the program should be written to STDOUT.
- Other than the value of the nth term no other characters /strings or message should be written to STDOUT.
For example
if n=10,the 10 th term in the series is to be derived from the 9th term in the series. The 9th term is 8 so the 10th term is (8/2)=4. Only the value 4 should be printed to STDOUT.
You can assume that the n will not exceed 20,000.
C
C++
Java
Python
C
#include<stdio.h> int main() { int i, n, a=0, b=0; printf("enter number : "); scanf("%d",&n); for(i=1;i<=n;i++) { if(i%2!=0) { if(i>1) a = a + 2; } else { b = a/2; } } if(n%2!=0) { printf("%d",a); } else { printf("%d",b); } return 0; }
C++
#include<iostream>
using namespace std;
int main() { int i, n, a=0, b=0; cout << "enter number : "; cin >> n; for(i=1;i<=n;i++) { if(i%2!=0) { if(i>1) a = a + 2; } else { b = a/2; } } if(n%2!=0) { cout << a; } else { cout << b; } return 0; }
Java
//Java program to find nth element of the series
import java.util.Scanner;
class Main
{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int a = 0, b = 0;
if(n % 2 == 0)
{
for(int i = 1 ; i <= (n-2) ; i = i+2)
{
a = a + 2;
b = a / 2;
}
System.out.print(b);
}
else
{
for(int i = 1 ; i < (n-2) ; i = i+2)
{
a = a + 2;
b = a / 2;
}
a = a + 2;
System.out.print(a);
}
}
}
Python
n = int(input('enter the number:'))
a=0
b=0
for i in range(1,n+1):
if(i%2!=0):
a= a+2
else:
b= b+1
if(n%2!=0):
print('{}'.format(a-2))
else:
print('{}'.format(b-1))
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import java.util.Scanner;
public class q7 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println(“enter value of n : “);
int n = sc.nextInt();
int a =0;
if(n%2==0){
for(int i =0; i<n/2; i++){
int N = n/2;
int res = a + (N-1)*1;
System.out.println(res);
break;
}
}
else{
for(int i =0; i<(n/2)+1; i++){
int N = (n+1)/2;
int res = a + (N-1)*2;
System.out.println(res);
break;
}
}
}
}
public class Main
{
public static void main(String[] args) {
int num = 16;
System.out.println((num % 2 == 0) ? (num / 2) – 1 : (num / 2) * 2);
}
}
Using Java Code :-
import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
Scanner s=new Scanner(System.in);
System.out.println(“Enter Any Number.”);
int num=s.nextInt();
System.out.println(num%2!=0? (int)Math.abs(num-1):(int)Math.abs((num/2)-1));
}
}
Using Java Code:-
import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
Scanner s=new Scanner(System.in);
System.out.println(“Enter Any Number.”);
int num=s.nextInt();
System.out.println(num%2!=0? (int)Math.abs(num-1):(int)Math.abs((num/2)-1));
}
}
/******************************************************************************
Using Java Code
0,0,2,1,4,2,6,3,8,4,10,5,12,6,14,7,16,8
odd:- 0 2 4 6 8 10 12 14 16 ….
even:- 0 1 2 3 4 5 6 7 8….
*******************************************************************************/
import java.util.Scanner;
public class Main
{
public static void main(String[] args) {
Scanner s=new Scanner(System.in);
System.out.println(“Enter Any Number.”);
int num=s.nextInt();
System.out.println(num%2!=0? (int)Math.abs(num-1):(int)Math.abs((num/2)-1));
}
}