- 将两个vector首尾合并为一个vector
vectorlaneLabel, roadLabel, label; label.insert(label.end(), roadLabel.begin(), roadLabel.end()); label.insert(label.end(), laneLabel.begin(), laneLabel.end());

vectorlaneLabel, roadLabel, label; label.insert(label.end(), roadLabel.begin(), roadLabel.end()); label.insert(label.end(), laneLabel.begin(), laneLabel.end());