joshlin

First, install the following libraries:

$ brew install unixodbc
$ brew install freetds --with-unixodbc

FreeTDS should already work now, without configuration:

$ tsql -S [IP or hostname] -U [username] -P [password]
locale is "en_US.UTF-8"

locale charset is "UTF-8"

joshlin

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.

joshlin

#
# 2 - REVERSAL
#
# The quickest way to reverse an array is to swap elements at either end, and repeat
# while moving up from the left and down from the right.
#
#   [ a b c d e f ]
#   [ f         a ] - Step 1 we switched A[0] with A[-1]
#   [   e     b   ] - Step 2 we switched A[1] with A[-2]
#   [     d c     ] - Step 3 we switched A[2] with A[-3]

joshlin

require 'yaml'

require 'json'

# require 'active_support/core_ext'

#HashWithIndifferentAccess