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public class Main {
    public static void main(String[] args) {
        System.out.println("License Plates Generator");
        System.out.println(gen(3));
        System.out.println(gen(10000));
        System.out.println(gen(9000_00));
    }

    private static String gen(int n) {
        // [0,100_000) -> ""             ... 100_000

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public class CircularBuffer<T> {
    private final T[] buffer;
    private int head = 0;
    private int tail = 0;
    private int size = 0;
    private final int capacity;

    public CircularBuffer(int capacity) {
        this.capacity = capacity;
        buffer = (T[]) new Object[capacity];

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import java.util.*;
import java.util.function.*;

class PriorityFirstSearch {
    private final int N = 100;
    private int _tick = 0;
    
    private void byPFS(char src) {
        /**
         * To emcompass all four kinds of search (dfs, bfs, dijkstra, prim),

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readline/emacs

[c-a] .                 . [c-e]
[a-b]    .         .      [a-f]
[c-b]    |   . .   |      [c-f]
         |   |_|   |
    $ cp monfichier dir/
 | ^ | [c-d]

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sudo apt-get update

# zsh, oh-my-zsh, zplug
sudo sed -i 's/required/sufficient/g' /etc/pam.d/chsh  # env: `gcp vm`
sudo apt-get install -y git wget zsh && \
  chsh -s $(which zsh) && \
  sh -c "$(wget https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh -O -)" && \
  (curl -sL --proto-redir -all,https https://raw.githubusercontent.com/zplug/installer/master/installer.zsh | zsh)
mv ~/.zshrc{,.bak}

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How to copy a GitHub repo without forking

GitHub only lets you fork a repo once, if you want to make more than one copy of a project here's how you can do it. Useful for starter code.

1. Create a new empty folder for your project and initialize git

   cd where-you-keep-your-projects

mkdir your-project-name

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Bash Shortcuts

Moving

command	description
ctrl + a	Goto BEGINNING of command line

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Below are the Big O performance of common functions of different Java Collections.


List                 | Add  | Remove | Get  | Contains | Next | Data Structure
---------------------|------|--------|------|----------|------|---------------
ArrayList            | O(1) |  O(n)  | O(1) |   O(n)   | O(1) | Array
LinkedList           | O(1) |  O(1)  | O(n) |   O(n)   | O(1) | Linked List
CopyOnWriteArrayList | O(n) |  O(n)  | O(1) |   O(n)   | O(1) | Array

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; RenZkeys - developer-productivity key bindings for AutoHotkey
; Author: Matthew Renze
; Purpose: To maximize your keyboard productivity by minimizing the number of times your fingers leave the home row for text navigation, selection, and deletion
; Based on Vonmacs by Jon von Gillern
; For more information, please visit my github repo:
; https://github.com/matthewrenze/ren-z-keys

;Character-level Text Navigation
!k::Send {Up}
!j::Send {Down}

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• Java, Collections, Complexity
• Python, for Lispers
• Python, Typing, Cheatsheets
• Languages, Learn X in Y minutes
• Languages, Hyperpolygot
• Regex, Cheatsheets

Articles:

• Typed Python, for Typescripters