/// <summary>Builds output based object classes passed in</summary>
/// <param name="classes">All classes store in program</param>
/// <returns>A string of all information regarding courses stored in classes object</returns>
public static string BuildCoursesHomeworkByPriority(AllClasses classes)
{
var output = buildPriorityOutput(classes.FindMatchingCourses(Priority.High), "High");
output += buildPriorityOutput(classes.FindMatchingCourses(Priority.Medium), "Medium");
output += buildPriorityOutput(classes.FindMatchingCourses(Priority.Low), "Low");
return(output);
}
