import java.util.List;
import java.lang.Integer;
//import java.util.Collection;

class Merge  {

	merge(a, b) {
     	a.addAll(b);
		return a;
	}



  	sort(in){
		var firstHalf = in.subList(1,2);
    	var secondHalf = in.subList(1,2);
    	return merge(sort(firstHalf), sort(secondHalf));
    }
    
}