Reverse array in groups(GeeksForGeeks)

ReverseArrayInGroups.java

//Java Code for geeksforgeeks solution of Reverse array in groups problem given on gfg array school section.
import java.util.*;
import java.lang.*;
import java.io.*;
class GFG
 {
	public static void main (String[] args)
	 {
	    Scanner s = new Scanner(System.in);
	    int ntest = s.nextInt();
        while (ntest-- > 0){
            int size = s.nextInt();
		    int[] arr = new int[size];
		    for (int i = 0; i < size; i++){
		        arr[i] = s.nextInt();
		    }
		    int group_size = s.nextInt(), orig = group_size, count = 1;
		    for (int i = 0; i < size; i++){
		        if (group_size >= size)
		            group_size = size;
		        if (group_size-- > orig * (count - 1))
		            System.out.print(arr[group_size] + " ");
             //prints->3 2 1 5 4
		        else{
		            group_size = orig * ++count;
		            i--;
		        }
		    }
		    System.out.println();
        }
	 }
}