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package com.experimental;

import java.util.Stack;

import nu.xom.Attribute;
import nu.xom.Document;
import nu.xom.Element;
import nu.xom.Elements;

import org.concordion.api.Evaluator;

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using Microsoft.VisualStudio.TestTools.UnitTesting;
using System.Collections.Generic;
using System.Linq;
using System;
using System.Security.Cryptography;
using System.Text;

namespace UnitTestProject8
{

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using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Linq;

// http://json.codeplex.com/
// NUGET: install-package Newtonsoft.Json
// MY TIME: Millisecs = 0, Ticks = 588  (total 357 ms)

namespace Reto7
{

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import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Arrays;
import java.util.Scanner;

public class StudiousStudentWrong {

	public static void main(String[] args) throws Exception {

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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;

namespace Reto_6
{

    [DebuggerDisplay("Count = {Count}, ActiveCount = {ActiveCount}")]
    [DebuggerTypeProxy(typeof(CacheDebugView))]

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using System.Collections.Generic;
using System.Linq;

namespace Reto5
{
    public class DictionaryPlus<TK, TV> : Dictionary<TK, TV>
    {
        public IEnumerable<TV> this[params TK[] keys] {
            get {
                return keys.Select(key => base[key]);

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/*
We are asked to give a random derangement: http://en.wikipedia.org/wiki/Derangement

We use a slight modification of Fisher-Yates shuffle algorithm to make sure it's a derangement. 
This algoritm works because all elements are moved one or more times to the left so at the end
all elements are in different positions than the original one.

But with this modification, random properties are not great. For example some permutations are more
likely than others, and there are some permutatations which can never happen.

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using Dict = System.Collections.Generic.Dictionary<string, System.Delegate>;
using Pair = System.Collections.Generic.KeyValuePair<string, string>;

namespace ObjectDumper
{
    public class ObjectDumper<T> where T: class 

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// Leo Antoli solution to reto 2 MSDN using add and remove: http://blogs.msdn.com/b/esmsdn/archive/2014/09/19/retosmsdn-reto-2-161-esos-eventos.aspx

// NOTE: It's not thread-safe, locking should be added.

using System;
using System.Collections.Generic;
using System.Linq;

namespace Reto2ClassLibrary
{

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// Leo Antoli solution to reto 2 MSDN: http://blogs.msdn.com/b/esmsdn/archive/2014/09/19/retosmsdn-reto-2-161-esos-eventos.aspx

using System;
using System.Linq;

namespace Reto2ClassLibrary
{
    public class Reto2 : IReto2
    {
        public event EventHandler EventFired;