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Schaepher's Blog

UML 用例图

参考链接 https://cloud.tencent.com/developer/article/1924364 https://www.ibm.com/docs/en/elm/6.0.2?topic=cases-use https://www.wumaow.org/tu/4834527.html https://blog.csdn.net/Tir_zhang/article/details/124174730 https://max.book118.com/html/2018/0425/163067362.shtm http://lib.uml.com.cn/ebook/UML2.5/UML-53.asp https://www.edrawmax.cn/templates/file/1014712 https://blog.csdn.net/weixin_34261415/article/details/92119483 https://developer.aliyun.com/article/51636 https://blog.csdn.net/m0_53291740/article/details/122073445 https://online.visual-paradigm.com/cn/diagrams/templates/use-case-diagram/online-shopping-system-use-case-diagram/ https://blog.csdn.net/zhaokx3/article/details/68958218 https://support.microsoft.com/en-us/office/create-a-uml-use-case-diagram-92cc948d-fc74-466c-9457-e82d62ee1298#:~:text=You%20can%20create%20a%20UML%20use%20case%20diagram,diagrams%20show%20the%20expected%20behavior%20of%20the%20system. https://venngage.com/blog/use-case-diagram-example/ https://www.uml-diagrams.org/examples/online-shopping-use-case-diagram-example.html https://www.researchgate.net/figure/Use-Case-Diagram-of-the-Online-Games-Marketplace_fig2_339259369

红黑树

2-3 树和 2-3-4 树统称为 B-树(Balanced Tree)。 为什么不直接使用 B-树? 既然以 2-3 树和 2-3-4 树都可以用来转换成红黑树,为什么最终使用 2-3-4 树的转换