rayhamel

ALGORITHMS AND INTERVIEW QUESTIONS CHEAT SHEET

DATA STRUCTURES

A data structure is a group of data organized in the computer's memory by certain specific rules defining predictable relationships between the data. Arrays, hashes and relational databases are all examples of data structures.

rayhamel

This walkthrough uses our group project as an example; we will be creating an upvote/downvote system.

Redis

Install Redis and the Redis gem (in terminal).

$ brew install redis
$ ln -sfv /usr/local/opt/redis/*.plist ~/Library/LaunchAgents

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throw new Error("The sky is falling!");

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#ifndef SLURP_H
#define SLURP_H

class Slurp {
	void *begin_{ nullptr };
	void *end_;
public:
	Slurp() = delete;
	Slurp(const Slurp &) = delete;
	Slurp &operator=(Slurp) = delete;

rayhamel

#!/usr/bin/python
#
# Version 2  
# 9 July 2013
#
# Modified to use xml format output from timegenie instead of text file
#
# Version 3
# 7 March 2014
#

rayhamel

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             ░░▒▓▓▓▓▓▓▓▓▓▓▓▒░░
           ░▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒░
        ░▒▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▒░
     ░▓▓▓▓▓▓▓▓▓▓▓▓▓▓░░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓░
    ░▓▓▓▓▓▓▓▓▓▓▓▓░░░░▓░░░░▓▓▓▓▓▓▓▓▓▓▓▓░                   dd
    ░▓▓▓▓▓▓▓▓▒░░░▓▓▓▓▓▓▓▓▓░░░▒▓▓▓▓▓▓▓▓░                   88
    ░▓▓▓▓▓░░░░░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░     8b,dPPYba,  MM88MMM  ,adPPYba,
    ░▓▓░░░▒▒▒▒▒▒░░░░▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓▓░     88P'    "8a   88    a8"     ""
     ░░▒▒▒▒▒▒▒▒▒▒▒▒▒░░░▓▓▓▓▓▓▓▓▓▓▓▓▓░░      88       d8   88    8b

rayhamel

#!/usr/bin/python
#
# Version 2  
# 9 July 2013
#
# Modified to use xml format output from timegenie instead of text file
#
# Version 3
# 7 March 2014
#

rayhamel

/* https://wandbox.org/permlink/69aE7gIqBcWonJB0 */

constexpr auto operator""_times(unsigned long long i) noexcept
{
	return [i](auto &&f) {
		for (auto n{i}; --n; f());
		return f();
	};
}

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#include <algorithm>
#include <array>
#include <chrono>
#include <cstddef>
#include <cstdint>
#include <iostream>
#include <iterator>
#include <random>

#if !defined(__GNUC__) && !defined(__attribute__)

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$ brew doctor

Your system is ready to brew.

$ brew config

HOMEBREW_VERSION: 1.6.1-18-g714bf51
ORIGIN: https://github.com/Homebrew/brew.git
HEAD: 714bf51524eb9c56b189d0d4f5a7a1cfe8b9d6d3
Last commit: 11 hours ago