Useful Tools I Use
k2pdfopt A tool, transforms pdf files to easy-read pdf in mobile device. K2pdfopt optimizes PDF/DJVU files for mobile e-readers (e.g. the Kindle) and smartph...
Recent Posts
Math Related Things
Relation between Density and Histrogram funcion Given , where is the density function of , and the width of each bin , we can produce histrogram function...
Linux Management
What’s Ctrl-C, Ctrl-D…
famous algorithm
Median of medians The optimal algorithm selecting kth largest element,with linear time complexity Reference: https://en.wikipedia.org/wiki/Median_of_medians
common sense
Foot <-> Inch <-> Centimeter
My Notes about C++
Funny tricks #define foo(...) printf(__VA_ARGS__);