Write a method that returns the sum of all the elements of an array of ints that have an odd index.

import java. io.*;

import java. util. Scanner;

class Odd {

public static void main (String[] args) {

Scanner ele=new Scanner (System. in); //creating a scanner object.

int n, sum=0; //declaring n and sum and initializing sum with 0.

n=ele. nextInt (); //taking input of the n.

int [] arr = new int[n]; //declaring an array arr.

for (int i=0; i
{

arr[i]=ele. nextInt (); //taking input of the array.

}

for (int i=0; i
{

if (i%2!=0) / /adding to the if index is odd.

{

sum+=arr[i];

}

}

System. out. println (sum);

}

}

Input:-

6

1 2 3 4 5 6

Output:-

12

Explanation:

First I have created an a scanner object ele. I have taken two integers n and sum, n for number of array elements and sum for calculating the sum of odd indexed elements hence initializing it with 0. Then I have created an array named arr. Then taking the input of the n and array elements. Then looping over the array and calculating the sum.