这篇文章总结了一些部落冲突游戏里常用的技巧。 资源 实验室 实验室正在研发科技的时候是可以升级实验室的，科技研发速度会减半。 部落城堡 从部落城堡、月

本文简略探讨一下 2023 年高考全国甲卷理科数学的部分试题。

This article documents my trobleshooting experience to fix a WiFi issue on my Android phone.

Chef is a configuration management software that can automate many DevOps tasks. It supports a variety of platforms. However, it does not have official support for ARM based platforms, such as Raspberry Pi. This article describes how to compile Chef from source on a Raspberry Pi.

Sometimes developers needs to extract APK files from an Android phone, for the purpose of malware analysis, etc. This article describes how to do that with the ADB tool.

My notes when reading Fourier Analysis An Introduction by Stein and Shakarchi. This is for chapter 2 Basic Properties of Fourier Series, section 1 Examples and formulation of the problem.

My notes when reading Fourier Analysis An Introduction by Stein and Shakarchi. This is for chapter 2 Basic Properties of Fourier Series, section 2 Uniqueness of Fourier series.

My notes when reading Fourier Analysis An Introduction by Stein and Shakarchi. This is for chapter 2 Basic Properties of Fourier Series, section 3 Convolutions.

This is an interesting question. Upon first look, it seems to be a stack-related question, as the operation of moving stuff from a pile resembles a stack data structure. However, it actually has nothing to do with stacks.

This problem has a pretty straightforward solution. Don’t over-think about math tricks like multiplying all the numbers, etc. The most intuitive solution just works.