This is a note of MATH1207 Probability and Mathematical Statistics (概率论与数理统计) taught at SJTU.
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Common Discrete Random Variables and Their Properties｜Common Continuous Random Variables and Their Properties｜
Steps and delicacies in 2025. See more in Masonry Collection.
Another year in postcrossing and here is the digest of 2025. Check my postcard activities at Collections/Postcards.
The transition from high school to university is often described as a leap, but for me, it felt more like a shift in time zones. Suddenly, the rhythm of life accelerated. Looking back at the Spring semester of 2024 and the Fall semester of 2025, the blur of academic rigors, orientation events, and the sheer mental load of “First Year” adjustments took center stage.
Here is a digest of the postcrossing postcards I’ve sent in 2024. My postcard activities can be found on Collections/Postcards.
This post introduces how to display a postcard map in a Hexo blog using data exported from Postcrossing or in a custom format.
This is a write-up for ZJUCTF 2025. The original challenge descriptions can be found at https://mp.weixin.qq.com/s/Z91DTlJtvWClyCfnHpXTOQ for ZJU students or https://notes.sjtu.edu.cn/s/nji8es_7e for SJTU students.
All solution code and some challenge files referenced below are collected in the repository MingchenDai/ZJUCTF-2025.
Some notes on C++ STL.
This post is aimed to record some interesting LeetCode problems.
Reference: Regular Expressions Tutorial
Regular expressions is a sequence of characters that forms a search pattern and own common shortands regex or regexp.
Engines are programs that can process regular expressions, trying to match the pattern to the given string. Different engines may have different syntax and features.
One of explorations in winter holiday is learning the usage of git by Learn Git Branching, which provides a visualized way to learn.