Wei He wei

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

⚠️ I'd recommend using this fork by @igoro00 which has better theme support.

Tiny wrapper component for React-Datepicker to stylistically fit with Chakra-UI 1.x.

<DatePicker selectedDate={myDate} onChange={(d) => console.log(d)} />

If anyone is interested in setting up their system to automatically (or manually) sign their git commits with their GPG key, here are the steps:

Generate and add your key to GitHub
$ git config --global commit.gpgsign true ([OPTIONAL] every commit will now be signed)
$ git config --global user.signingkey ABCDEF01 (where ABCDEF01 is the fingerprint of the key to use)
$ git config --global alias.logs "log --show-signature" (now available as $ git logs)
$ git config --global alias.cis "commit -S" (optional if global signing is false)
$ echo "Some content" >> example.txt
$ git add example.txt
$ git cis -m "This commit is signed by a GPG key." (regular commit will work if global signing is enabled)

	cat > /etc/yum.repos.d/CentOS-Stream-AppStream.repo << EOF
	# CentOS-Stream-AppStream.repo
	#
	# The mirrorlist system uses the connecting IP address of the client and the
	# update status of each mirror to pick current mirrors that are geographically
	# close to the client. You should use this for CentOS updates unless you are
	# manually picking other mirrors.
	#
	# If the mirrorlist does not work for you, you can try the commented out
	# baseurl line instead.

	Add the following in .zshrc:

	...
	plugins=(osx git zsh-autosuggestions zsh-syntax-highlighting zsh-nvm docker kubectl)
	...

	### Fix slowness of pastes with zsh-syntax-highlighting.zsh
	pasteinit() {
	OLD_SELF_INSERT=${${(s.:.)widgets[self-insert]}[2,3]}
	zle -N self-insert url-quote-magic # I wonder if you'd need `.url-quote-magic`?

	#!/bin/bash

	usage() { echo "usage: --coursename [--coursename \"build-a-react-app-with-redux\"] --type [--type \"courses\|lessons\"]" 1>&2; exit 1; }

	OPTS=$(getopt -o c:t: --long coursename:,type: -n 'download_egghead_videos.sh' -- "$@")

	if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi

	eval set -- "$OPTS"

	# One liner
	wget --recursive --page-requisites --adjust-extension --span-hosts --convert-links --restrict-file-names=windows --domains yoursite.com --no-parent yoursite.com

	# Explained
	wget \
	--recursive \ # Download the whole site.
	--page-requisites \ # Get all assets/elements (CSS/JS/images).
	--adjust-extension \ # Save files with .html on the end.
	--span-hosts \ # Include necessary assets from offsite as well.
	--convert-links \ # Update links to still work in the static version.

	var imgs = new Array;
	// replace all images by the xxl version
	$('li > img').each(function(i, item){
	var new_src = $(item).prop('src').replace('large', 'xxlarge');
	$(item).prop('src', new_src);
	imgs.push($(item));
	});

	// kill everything on page
	$('body').empty();

	upstream websocket {
	server localhost:3000;
	}

	server {
	listen 80;
	server_name localhost;

	access_log /var/log/nginx/websocket.access.log main;

	#!/bin/bash

	#
	# Run this script once per minute
	#
	# * * * * * /path/to/whois-watch.sh google.com apple.com >> /var/log/whois-watch.log 2>&1
	# update username in mail command
	# update sed command depending on server return text
	#