tunks

• System Design in Software Development

• The Lost Art of System Design - John Sundell, Swift & Fika 2018

• Grokking the Mobile System Design interview

• Mobile System Design Interviews (iOS and Android)

• How to Succeed in a System Design Interview

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# @Author: xiewenqian <int>
# @Date:   2016-11-28T20:35:09+08:00
# @Email:  wixb50@gmail.com
# @Last modified by:   int
# @Last modified time: 2016-12-01T19:32:48+08:00


import pandas as pd
from pymongo import MongoClient

tunks

package com.alipay.datamatrix.common.util;

import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;

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STEP 1: First Install HomeBrew, download it from http://brew.sh

$ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

STEP 2: Install Hadoop

$ brew search hadoop
$ brew install hadoop

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#EXTM3U
#EXTINF:0,24/7 Comedy Movies
http://93.174.95.125:1935/edge/_definst_/a1wn1j3ra1w0cv0/playlist.m3u8?wowzasessionid=1419879335
#EXTINF:0,24/7 HD Movies 1
http://93.174.95.125:1935/edge/_definst_/asn0crzhq351g0w/playlist.m3u8?wowzasessionid=1420171902
#EXTINF:0,24/7 HD Movies 2
http://93.174.95.125:1935/edge/_definst_/3mu6xhoy4xa8l7w/playlist.m3u8?wowzasessionid=1420172620
#EXTINF:0,24/7 Jackie Chan movies (1979-1990)
http://93.174.95.125:1935/edge/_definst_/gby01m6h4xd3lag/playlist.m3u8?wowzasessionid=1420169835
#EXTINF:0,24/7 Jackie Chan movies (1991-2008)

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import Foundation
import AudioToolbox

class KKSimplePlayer: NSObject {
	var URL: NSURL
	var URLSession: NSURLSession!
	var packets = [NSData]()
	var audioFileStreamID: AudioFileStreamID = nil
	var outputQueue: AudioQueueRef = nil
	var streamDescription: AudioStreamBasicDescription?

tunks

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

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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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Importing/Indexing database (MySQL or SQL Server) in Solr using Data Import Handler

Install Solr

download and install Solr from http://lucene.apache.org/solr/.

you can access Solr admin from your browser: http://localhost:8983/solr/

use the port number used in installation.

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curl http://spark-cluster-ip:6066/v1/submissions/status/driver-20151008145126-0000