elevine

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.

elevine

<packages>
  <package id="7zip.commandline"          />                                               
  <package id="autohotkey.portable"       />                                               
  <package id="autohotkey_l.portable"     />                                               
  <package id="ChocolateyGUI"             />                                               
  <package id="dropbox"                   />                                               
  <package id="fiddler"                   />                                               
  <package id="FoxitReader"               />                                               
  <package id="mingw-get"                 />                                               
  <package id="NuGet.CommandLine"         />                                               

elevine

private static byte[] AES_Decrypt_block(byte[] cipherText, byte[] Key)
{
    // Declare the string used to hold the decrypted text. 
    byte[] output_buffer = new byte[cipherText.Length];

    using (AesManaged aesAlg = new AesManaged())
    {
        //If CBC, must initialize IV = O_{128}
        //aesAlg.Mode = CipherMode.CBC;
        //aesAlg.IV = new byte[] { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };

elevine

13:00:01.026023 Enabling logging: [CRUD CRUD+ HTTP HTTP+ Access Cache Shadow Shadow+ Changes Changes+]
13:00:01.028025 ==== Couchbase Sync Gateway/1.0.3(81;fa9a6e7) ====
13:00:01.029028 Configured Go to use all 8 CPUs; setenv GOMAXPROCS to override this
13:00:01.029028 WARNING: Error setting MaxFileDescriptors to 5000: Unsupported on Windows -- rest.setMaxFileDes
criptors() at config.go:378
13:00:01.030025 Opening db /db as bucket "eric_test", pool "default", server <http://localhost:8091>
13:00:01.031023 Opening Couchbase database eric_test on <http://localhost:8091> as user "eric_test"
13:00:01.216004 Cache: Initialized changeCache with nextSequence=#890
13:00:01.217004 Shadow: Watching doc changes...
2015/02/25 13:00:01 go-couchbase: call to ViewCustom("sync_gateway", "access") in github.com/couchbaselabs/sync

elevine

//note, PROP_DELETED is _deleted and PROP_ID is _id
documentView.SetMap((doc, emit) =>
{
if (doc.ContainsKey(PROP_DOCTYPE) && doc[PROP_DOCTYPE].ToString().Equals(DOCTYPE_MYDOC))
 {
     emit(doc[PROP_ID], doc.ContainsKey(PROP_DELETED) ? doc[PROP_DELETED] : false);
    }
}, "1");    // NOTE: don't forget to update the revision number if this method changes!

elevine

2015-04-28T16:18:36.430-04:00 Enabling logging: [CRUD CRUD+ HTTP HTTP+ Access Cache Shadow Shadow+ Changes Changes+]
2015-04-28T16:18:36.433-04:00 ==== Couchbase Sync Gateway/() ====
2015-04-28T16:18:36.434-04:00 Configured Go to use all 8 CPUs; setenv GOMAXPROCS to override this
2015-04-28T16:18:36.434-04:00 WARNING: Error setting MaxFileDescriptors to 5000: Unsupported on Windows -- rest.setMaxFileDescriptors() at config.go:419
2015-04-28T16:18:36.435-04:00 Opening db /db as bucket "sync_gateway", pool "default", server <http://localhost:8091>
2015-04-28T16:18:36.436-04:00 Opening Couchbase database sync_gateway on <http://localhost:8091> as user "sync_gateway"
2015-04-28T16:18:36.596-04:00 Cache: Initializing changes cache with options {CachePendingSeqMaxWait:5s CachePendingSeqMaxNum:10000 CacheSkippedSeqMaxWait:1h0m0s}
2015-04-28T16:18:36.596-04:00 Shadow: Watching doc changes...
2015/04/28 16:18:37 go-couchbase: call to ViewCustom("sync_gateway", "access") in github.com/couchbase/sync_gateway/db.(*Databa

elevine

	/**
	 * Generates a ddl statement to create a table and executes it
	 * 
	 * @param db
	 * @param tablename
	 * @param columnToType - a mapping of column names to their SQL types in the table
	 */
	private void createTable(SQLiteDatabase db, String tablename, Map<String,String> columnToType){
		StringBuilder builder = new StringBuilder();
		builder.append("CREATE TABLE " + tablename +" (");

elevine

import com.couchbase.android.CouchbaseMobile;
import com.couchbase.android.ICouchbaseDelegate;

import android.app.Activity;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

public class Main extends Activity {

elevine

package com.j256.ormlite.android;

import java.sql.SQLException;

import android.app.Activity;
import android.content.Context;
import android.database.Cursor;
import android.database.CursorWrapper;
import android.view.View;
import android.widget.ResourceCursorAdapter;

elevine

#from module ConnectionHandling   

 def establish_connection(spec = ENV["DATABASE_URL"])
      resolver = ConnectionAdapters::ConnectionSpecification::Resolver.new spec, configurations
      spec = resolver.spec

      unless respond_to?(spec.adapter_method)
        raise AdapterNotFound, "database configuration specifies nonexistent #{spec.config[:adapter]} adapter"
      end