* @param arr 待排序数组
In 1992, in a small shop in British Columbia, a sign maker named Blair Gran stared at a wall full of half-finished jobs and felt something click. Sign-making was treated like a commodity — orders in, banners out — but as thousands of signs came through his shop, he couldn’t help but notice the difference between the good ones and the bad ones. He could see that every sign that left his shop was either helping a business get noticed, or letting it disappear in plain sight.
，更多细节参见同城约会
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▲提示词仅需修改前面部分：location: Hong Kong, specific_view: Vitoria Harbour, Weather: Sunny, aspect_ratio: 21:9.