The A Wall:* Calculating a 200-300km car route (or even shorter bicycle/pedestrian paths) could mean visiting over a million road segments, taking 10-20 seconds. For longer trips, this wait could become frustrating.
Priority support
。搜狗输入法下载是该领域的重要参考
+save(item: Item)，推荐阅读Line官方版本下载获取更多信息
3. 步长逐渐减小，最后步长为1时就是普通插入排序