Created from Photo by T. Q. on Unsplash and Photo by Yancy Min on Unsplash

Photo by Christophe Hautier on Unsplash


Created from Photo by T. Q. on Unsplash and Photo by Yancy Min on Unsplash
  1. Save your GitHub account credentials on your computer.
  2. Update the Git credentials after you change your Github username and/or PW.
  3. Delete the Git credentials from your computer.


Here is a table of contents for the topics covered in this article:

  • What is Coding
  • Data Structures
  • Complexity Analysis
  • Memory
  • Big O Notation
  • Logarithm
  • Arrays
  • Linked Lists
  • Hash Tables
  • Stacks & Queues
  • Strings
  • Graphs
  • Trees

What is coding

→ Manipulating data

Data Structures

→ A way…


PATH variable

Your computer (Mac or Linux, or a Unix-based system) has an environment variable called PATH, which contains a set of executable program directories that contain the executable programs.

Peter Donghun Lee, CFA

Software Engineer. Trader and Investor. CFA charterholder.

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