jeremyckahn

function inherit (child, parent) {
  function proxy () {};
  proxy.prototype = parent.prototype;
  child.prototype = new proxy();
};

function Parent () {}
function Child () {}

inherit(Child, Parent);

jeremyckahn

<think>

</think>

To invert a binary tree (also known as **mirroring** it), we swap each node's left and right children recursively.

Then, to **print an ASCII representation** of the tree before and after inversion, we can use a helper function that prints the tree in a structured way — typically using indentation and vertical lines to represent the hierarchy visually.

Here’s how you can do this in JavaScript:

jeremyckahn

<think>

</think>

To **invert a binary tree** in JavaScript, you can perform a recursive swap of left and right children for each node.

Then, to **print an ASCII representation**, we'll use a helper function that prints the tree in a readable format (like how it might look on paper).

---

jeremyckahn

Here's a summary of the game rules based on the state machine:

1. Initial State:

   • The game begins in an "UNINITIALIZED" state, waiting for each player to complete their setup.
   • A prompt is issued to the session owner to start setting up.

2. Player Setup Phase:

   • Players are prompted to set up their initial state (PROMPT_PLAYER_FOR_SETUP).
   • Once all players have completed their setup (though this condition isn't explicitly checked in the code), the game moves to the "WAITING_FOR_PLAYER_TURN_ACTION" state, ready for player turns.

jeremyckahn

System Design Interview Prep Resources

• How to Succeed in a System Design Interview
• System Design Cheatsheet
• How to choose a database in 2018
• https://github.com/dwyl/how-to-choose-a-database
• Video: System Design Introduction For Interview
• Video: Intro to Architecture and Systems Design Interviews
• Video playlist: System Design
• Book Cracking the Coding Interview (has an excellent section that will get you well-prepared for these types interviews, as well as many others)

jeremyckahn

{
  "allowCustomPeerCowNames": false,
  "cellarInventory": [],
  "completedAchievements": {},
  "cowBreedingPen": {
    "cowId1": null,
    "cowId2": null,
    "daysUntilBirth": -1
  },
  "cowColorsPurchased": {},

jeremyckahn

{
  "allowCustomPeerCowNames": false,
  "cellarInventory": [
    {
      "id": "84acbe21-60ad-4604-ab23-48240f0c970b",
      "itemId": "wine-chardonnay",
      "daysUntilMature": -151
    },
    {
      "id": "e3a2afb9-fc25-4329-9d25-e290281f4ee5",

jeremyckahn

Front End System Design Interview Checklist

• Ask for clarifying questions
  • What is the scale of the solution needed?
    • How many daily active users?
    • How are they geographically distributed?
    • What are we expecting in terms of peak traffic?
  • What are the most business critical use-cases?
    • What's a user persona we should be targeting?
• Identify constraints

jeremyckahn

  docker run \
  
    # Set the current host working directory as the container's /tmp so the container can access it
    -v $(pwd):/tmp \
    
    # Mount your home directory as the Docker root user's home directory to inherit any host dotfiles
    -v $HOME:/root \
    
    # (Effectively) set the host's working directory as the container's working directory
    -w /tmp \

jeremyckahn

// Generated by ChatGPT: https://chat.openai.com/share/6c78c3f4-213d-48e6-9f79-b85ef3a7adc7

// Helper functions for converting between ArrayBuffer and base64
function arrayBufferToBase64(buffer) {
  const bytes = new Uint8Array(buffer);
  return btoa(String.fromCharCode.apply(null, bytes));
}

function base64ToArrayBuffer(base64) {
  const binaryString = atob(base64);