/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
	    int[] arr = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
 
	    int[] newArr = sliceArray(arr, 3);
 
	    System.out.print(Arrays.toString(newArr));
	}
 
    public static int[] sliceArray(int[] arr, int spacing) {
        int curr = 0;
        int[] newArr = new int[((arr.length - 1) / spacing) + 1];
        for (int i = 0; i < newArr.length; ++i) {
            newArr[i] = arr[curr];
            curr += spacing;
        }
        return newArr;
    }
}

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