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蛇年将至,如果画一条小蛇将「福」字添满,你会怎么创作呢?
我们来画“皮亚诺福”和“希尔伯特福”。皮亚诺曲线是一个一维曲线(一条蛇)却可以填满一个二维正方形,构造方法如下: 首先我们把要填满的正方形分成3×3的空间,然后按如下顺序画一条折线。 接下来,将每个小正方形继续分成3×3更小的正方形,然后改造每个小正方形内的线如下: 重复以上操作,不断地细化正方形,线会越来越密集。
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