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一笔画

就是拿着笔，放在纸上不抬起来，画出一些有意思的图形。

但是一般没有这么爽……一般是给你一幅图，让你一笔画出来。这也叫欧拉路径。

说起来特别简单。先找一个连接了奇数个点的点作为起点，把笔放下去。然后开始画，随便画。OK，成功了。

如果所有点都连接到偶数个节点，很好，画到最后又回到了起点。

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This entry was posted on Friday, March 12th, 2010 at 09:33 and is filed under 乱七八糟. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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