CoolMind

If you cannot measure it, you cannot improve it.

functools in python

Introduction wraps cmp_to_key partial total_ordering reduce Introduction functools like itertool is very useful, but we pay little ...

Posted by chunyang on October 17, 2019

abc module in Python

Introduction abc Module collections.abc Module Animal example AwesomeSequence Recommended reading: Introduction abc is short for Ab...

Posted by chunyang on October 16, 2019

String in cpp

Introduction Convert to and from numbers Convert a number into a string Convert a number from a string Construct a s...

Posted by chunyang on October 13, 2019

Notes about making Github pages beautiful

Introduction Auto TOC Highlight Anchor Comment Introduction More and more people are using Github pages as their personal website. Git...

Posted by chunyang on October 11, 2019

Python descriptor

Property Descriptor Recently in my project, I need to dynamically add property to an instance. It is easy that any class can support it. c...

Posted by chunyang on September 30, 2019

Leetcode summary of 20190922-20190929

Summary Highlight Code Section Summary Solved problems list Remove All Adjacent Duplicates in String II Most Stones Removed with ...

Posted by chunyang on September 29, 2019

Dijkstra's 3-way quick sort

Quick-sort is one of the greatest inventions. Most of the time, its time complexity is O(nlogn). However, when the input array contains lots of dup...

Posted by chunyang on September 24, 2019

Leetcode summary of 20190915-20190922

Summary Highlight Code Section Summary Solved problems list Check If Word Is Valid After Substitutions Redundant Connection Arr...

Posted by chunyang on September 22, 2019