import java.util.List;
import java.util.ArrayList;
import java.lang.String;

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

sort(in){
	var firstHalf = in;
	var secondHalf = in; 
	return merge(sort(firstHalf), sort(secondHalf));
}


	/*
	void sort(a){
		a = merge(a,a);
	}
	*/
}