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# (Variant for exercise 5.1 on EPI (Elements of Programming Interviews))
# The rationale behind it is to squeeze the forth color (middle right color) in between the middle left and right sub-arrays. It defines the colors as the algorithm progresses.
# It has a O(n) time complexity and O(1) space complexity

from typing import List

def dutch_variant_four_colors(array: List[int]) -> List[int]:
    left = array[0]
    mid_left = None
    right = None

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# Returns the size of the largest binary subtree that is complete, in Python - variant for exercise 9.1 on EPI (Elements of Programming Interviews)
# The gist of the solution is to keep track of the subtree's current number of nodes, current height and maximum height until that point.
# With the current number of nodes and height, one can calculate the root's own number of nodes and height via its direct childs respective information,
#   taking into to consideration the relation between the child heights and if they are perfect subtrees or not.
# Solution is O(n) time complexity and O(h) space complexity (function call stack corresponds from the root through the unique path to the current node)

from collections import namedtuple


class BTN():

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Convert MOV to GIF using FFmpeg and ImageMagick

I tried a few different techniques to make a GIF via command-line and the following gives me the best control of quality and size. Once you're all setup, you'll be pumping out GIFs in no time!

Preparation

Install FFmpeg

• $ brew install ffmpeg [all your options]
  • Example: $ brew install ffmpeg --with-fdk-aac --with-ffplay --with-freetype --with-frei0r --with-libass --with-libvo-aacenc --with-libvorbis --with-libvpx --with-opencore-amr --with-openjpeg --with-opus --with-rtmpdump --with-schroedinger --with-speex --with-theora --with-tools

Install ImageMagick

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const assert = require('assert');
const async = require('async');
const fs = require('fs');
let request = require('request');
const FileCookieStore = require('tough-cookie-filestore');

if (!fs.existsSync('cookies.json')) { fs.writeFileSync('cookies.json', '{}');}
let j = request.jar(new FileCookieStore('cookies.json'));
request = request.defaults({ jar : j });

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#!/bin/bash

build_folder="build"
source_image="source-image.png"

mkdir $build_folder

convert $source_image -scale 16 $build_folder/16.png
convert $source_image -scale 32 $build_folder/32.png
convert $source_image -scale 48 $build_folder/48.png

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/* How to Create a userChrome.css File: https://www.userchrome.org/how-create-userchrome-css.html */

/* Dark background color for private browsing tabs, with corresponding lighter text color */
#main-window[privatebrowsingmode="temporary"] #tabbrowser-tabs {
    /*--tab-line-color: #8000d7 !important;*/
    background-color: #000000 !important;
    color: #ffffff !important;
}

lopespm

# In OSX, export all your root certicates through Keychain to "Certificates.pem" (for example)
openssl s_client -CAfile Certificates.pem -connect learnbreak.com:443 -servername learnbreak.com | openssl x509 -noout -subject -issuer

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# Show Tasks
adb shell dumpsys activity activities | sed -En -e '/Stack #/p' -e '/Running activities/,/Run #0/p'

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using System.Collections.Generic;
using System.Linq;

static class EnumerableExtensions
{
    /// <summary>
    /// Calculate the enumerable's mid-range https://en.wikipedia.org/wiki/Mid-range
    /// </summary>
    public static float MidRange(this IEnumerable<float> source)
    {