每轮遍历后，最大元素会"冒泡"到末尾
与“买一个品牌”不同，这种方式更像是在现有能力边界上做延伸，风险更可控，但回报节奏也相对较慢。
。下载安装 谷歌浏览器 开启极速安全的 上网之旅。是该领域的重要参考
Anatomist, author and broadcaster Prof Alice Roberts has presented Digging for Britain since it first began
The hoard included shield bosses, while the boar's head can be seen on the right and the carnyx is behind