private static String getStep(PathCell start, PathCell end,boolean isPushingBox){
		
		if(end.getRow()-start.getRow()<0){
			return isPushingBox?"N":"n";
		}else if(end.getRow()-start.getRow()>0){
			return isPushingBox?"S":"s";
		}
		
		if(end.getColumn()-start.getColumn()<0){
			return isPushingBox?"E":"e";
		}else if(end.getColumn()-start.getColumn()>0){
			return isPushingBox?"W":"w";
		}
		
		return "";
		
		
	}