kruzus

Big O complexities for common methods of Java Collections and common sorting algorithms.


Complexity (Best to Worst)
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O(1)  <  O(log n)  <  O(n)  <  O(n log n)  <  O(n^2)  <  O(2^n)  <  O(n!)


Collections
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kruzus

Edit: This list is now maintained in the rust-anthology repo.

• Introduction
  • Understanding Over Guesswork
  • An Alternative Introduction to Rust
  • Rust and CSV Parsing
• Ownership
  • Where Rust Really Shines
  • Rust Means Never Having to Close a Socket
• The Problem with Single-threaded Shared Mutability

kruzus

#Linux Cheat Sheet

##File Commands:

• ls – directory listing
• ls -al – formatted listing with hidden files
• cd dir - change directory to dir
• cd – change to home
• pwd – show current directory
• mkdir dir – create a directory dir
• rm file – delete file

kruzus

Chmod codes cheat sheet

How to use chmod codes in UNIX:

1. There are three types of permissions in files and folders in unix
   1. Read (r)
   2. Write (w)
   3. Execute (x)
2. And, there is a classification of users called UGO (explained bellow):
3. U ~> User (usually, you)