一些常用算法的 JavaScript 实现
A collection of useful tools written in JavaScript, because I'm too lazy to do it over and over.
这些代码是早年收集的。一部分是我自己手写，其他则是在网上找来的。由于时间久远，部分代码来源已不可考，因此没有注明出处。
These codes were collected in the early years. Some of them were done by myself, the left were found online. Licenses were not claimed, because by the time I didn't have a clear understanding of open source policies. However, the sources were no longer accessible or discoverable.