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GROKKING NOTES

I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.

So below I made a list of leetcode problems that are as close to grokking problems as possible.

Pattern: Sliding Window

Network speed, signal strength and specifying the band

Identify network interfaces

ifconfig -a

or:

ip a

BitWarden to Apple iCloud Keychain passwords converter

This Python scripts allows you to move your passwords from BitWarden to Apple iCloud.

You need to know:

It ignores secure notes, credit cards and other types that are not passwords.
It ignores BitWarden entries without usernames, passwords and URLs.
It also ignores URLs that do not start with http:// or https://.
It normalizes all TOTP tokens, e.g. wskg vtqa h5kl bhb4 v4v2 ybyo woc6 qme2 will be converted to otpauth://totp/example.com:dude@foo.bar?secret=WSKGVTQAH5KLBHB4V4V2YBYOWOC6QME2&issuer=example.com&algorithm=SHA1&digits=6&period=30.

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Text to Image Translator</title>
	<style>
	/* Add any custom CSS styles here */
	</style>
	</head>

	// === Tokenizer

	class Tokens {
	constructor(tokens) {
	this.head = tokens[0];
	this.tail = tokens.slice(1);
	}
	}

	class Tokenizer {

	import sys,os
	import curses

	def draw_menu(stdscr):
	k = 0
	cursor_x = 0
	cursor_y = 0

	# Clear and refresh the screen for a blank canvas
	stdscr.clear()

	import crypto from "crypto";
	import { listAllSubscriptions } from "lemonsqueezy.ts";
	import { NextRequest } from "next/server";

	// Put this in your billing lib and just import the type instead
	type LemonsqueezySubscription = Awaited<ReturnType<typeof listAllSubscriptions>>["data"][number];

	const isError = (error: unknown): error is Error => {
	return error instanceof Error;
	};

	# ~/.tmux.conf
	#
	# See the following files:
	#
	# /opt/local/share/doc/tmux/t-williams.conf
	# /opt/local/share/doc/tmux/screen-keys.conf
	# /opt/local/share/doc/tmux/vim-keys.conf
	#
	# URLs to read:
	#

	android:clickable="true"
	android:focusable="true"
	android:foreground="?android:attr/selectableItemBackground"

	google.com
	youtube.com
	facebook.com
	baidu.com
	yahoo.com
	amazon.com
	wikipedia.org
	google.co.in
	twitter.com
	qq.com