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Definitions and basic terms of drawings   Figure: G=(V, E)    Grapg = (Vertex, Edge)    V: finite non empty set of vertices (data elements);   E: finite set of edges Undirected graph: each edge is undirected Directed graph: each edge has a direction Complete graph: any two points have an edge connected Sparse gr ...

Algorithm Introduction: Sort / / sort the elements in the containerrandom_shuffle / / shuffle and randomly adjust the order of elements within the specified range.merge / / the container elements are merged and stored in another container.reverse / / reverses the elements of the specified range. sort Function Description: Sort the ele ...

Hello, I'm fried fish.I've been watching go1 18. When releasing notes, I found that the Title Method of strings and bytes standard library was Deprecated. Why?Today's article will be read by fried fish and everyone.introduceHere, take the strings standard library as an example, strings The title method maps Unicode letters at the beginning of a ...

In the past few months, community users have added many plug-ins to Apache apisid, enriching the ecosystem of Apache apisid. From the perspective of users, the emergence of more diversified plug-ins is undoubtedly a good thing. On the basis of improving the high performance and low latency of Apache APISIX, they meet users' more expectations fo ...

@[toc]Spring Boot sends emails. Brother song has written articles before, so I won't be wordy here. If you don't understand how Spring Boot sends email, turn to the second half of this article for an introduction.Today, I want to talk to you about the port of SMTP server. This is also a question raised by a small partner. SMTP server has many p ...

Vue2 (long long ago), which has been used before, is now built through our previous development experience. • framework: Vue3 • route management: Vue router • status management: Vuex • UI component library: UI element • visual data display: echarts • Internationalization: vue-i18n • data request: Axios ...

Author: Lin Zuojian UC kernel found a fatal crash on Android 12. About 10% of users will encounter this problem during cold start, which seriously affects the release of UC kernel. Its call stack is as follows: 10-12 19:03:21.461 1038 2723 I id.AlipayGphon: Rejecting re-init on previously-failed class java.lang.Class<com.uc.webkit.impl ...

Linux applications usually have three ways to query whether device drivers can be accessed: blocking, non blocking and asynchronous notification. Asynchronous notification: "signal" came into being. The signal is similar to the "interrupt" used in our hardware, but the signal is at the software level. It can be regarded as ...

We will use a series to explain the complete practice of microservices from requirements to online, from code to k8s deployment, from logging to monitoring. The whole project uses the micro services developed by go zero, which basically includes go zero and some middleware developed by relevant go zero authors. The technology stack used is bas ...

Reading guideTime series prediction is a classical problem, which has been widely studied and applied in academia and industry. Even after adding the time dimension, everything in the world can be abstracted into time series problems, such as stock prices, weather changes and so on. The related theories of time series prediction are also very e ...