The benefit engineers can get from the Unix (-like) OS is you can exploit its bash commands and automate tedious and complicated operations. The vim /emacs user customize their editor and extend it so as to make those operations pretty quicker, and today I would like to introduce you how…

Today’s topic is the Red Black Tree algorithm’s deletion procedure. This is, shown as RB-DELETE(T, z) of which T stands for the tree and the z for the node to delete. First, we set the pointer to z, as y: y = z then to later fix the broken red…

The insertion procedure in red-black-tree, the insertion algorithm is something like, 1. hey, here is the newbie z! 2. are you smaller than this newbie? (z) yes -> okay, next (smaller guy) no -> okay, next (bigger guy) then finally, find the correct location on which a < z <…

The red black tree, is bit difficult algorithm (at least for me) to understand at the first glance. Initially personally thought of writing this article in my mother language but to be honest Japanese is pretty complex (inefficient) language to express (because i need to switch to and fro between…

Recently, vim/emacs are regarded as too old-school text editor nobody wants to use as a development tool, instead VS code etc… or IDE are sort of de-facto among engineers for coding. Many people misunderstand vim, the reason why vim is powerful is because by using vim we are using the…

counting sort bucket sort

Please check the vid above out… I found that create pieces of paper and play by myself is the easiest approach for me to grasp what is going on in the (maximum) heap sort algorithm.

This article is a short description of the Strassen’s algorithm for matrix multiplication. Thinking of multiplying the two matrices A and B, and as a result there is a matrix C. Then we can say: C = AB Plus, I encountered with the following formula: I confess that I’m dorky…

I do coding for about 8 years but have few chance to learn the CS so far (shame on me), and recently my wife bought me the INTRODUCTION TO ALGORITHMS THIRD EDITION, published from the MIT press. What motivated me to learn about this is since personally felt sort of…