How to shuffle an array including the last element?

I've tried using std::random_shuffle and std::shuffle, but they only shuffle the first and elements in between first and last, but not last. Is there a way to shuffle an array (vector) including the last element?

//NumberGenerator.h
#ifndef __NUMBERGENERATOR_H__
#define __NUMBERGENERATOR_H__
#pragma once
#include "Number.h" //regular numbers
#include "MegaNumber.h" //mega numbers
#include <vector> //<vector>
#include <string> //strings 
using std::to_string; //convert int to strings
#include <algorithm> //shuffle
//#include <random> //std::default_random_engine
#define NON_MEGA_COMBINATIONS 5
#define MEGA_COMBINATIONS 1

using std::vector; //<vectors>
using std::string; //string
using std::random_shuffle; //shuffles arrays

class NumberGenerator
{
public:
    NumberGenerator(vector<Number> numbers, vector<MegaNumber> megaNumbers); //constructor
    ~NumberGenerator();
    string pickNumbers(); //function that randomizes regularDraws and megaDraws
protected: 
    vector<Number> regularDraws; //contains number information
    vector<MegaNumber> megaDraws; //contains mega number information
};

#endif


//NumberGenerator.cpp
#include "NumberGenerator.h"


//constructor
NumberGenerator::NumberGenerator(vector<Number> numbers, vector<MegaNumber> megaNumbers)
{
    regularDraws = numbers;
    megaDraws = megaNumbers;
}

//destructor
NumberGenerator::~NumberGenerator()
{
}


string NumberGenerator::pickNumbers()
{
    srand(rand());
    random_shuffle(&regularDraws[1], &regularDraws[regularDraws.size() - 1]);
    random_shuffle(&megaDraws[1], &megaDraws[megaDraws.size() - 1]);
    string regular;
    string mega;
    string last = to_string(regularDraws[regularDraws.size() - 1].getID());

    for (int i = 1; i <= NON_MEGA_COMBINATIONS; i++)
    {
        regular = regular + " " + to_string(regularDraws[i].getID());
    }

    for (int i = 1; i <= MEGA_COMBINATIONS; i++)
    {
        mega = mega + " " + to_string(megaDraws[i].getID());
    }

    return regular + " " + mega + " " + last;
}



//Number.h
#ifndef __NUMBER_H_
#define __NUMBER_H__
#pragma once


class Number
{
public:
    Number(int id); //constructor
    ~Number(); //destructor


    int getID(); //returns the number ID



protected:
    int ID; //This is the number 
};

#endif 

//Number.cpp
#include "Number.h"


//constructor
Number::Number(int id)
{
    occurence = 0;
    occurencePct = 0;
    ID = id;
}

//destructor
Number::~Number()
{
}

//returns the number ID
int Number::getID() 
{
    return ID; 
}


//MegaNumber.h
#ifndef __MEGANUMBER_H__
#define __MEGANUMBER_H__
#pragma once
#include "Number.h"

//Subclass of Number
class MegaNumber :
    public Number
{
public:
    MegaNumber(int id); //Will be inheriting Number superclass
    ~MegaNumber();
};

#endif

//MegaNumber.cpp
#include "MegaNumber.h"


//constructor
MegaNumber::MegaNumber(int id) : Number::Number(id) //inherits the super class Number
{

}

//destructor
MegaNumber::~MegaNumber()
{
}

//Source.cpp
#include <iostream>
#include "NumberGenerator.h"
int main()
{
vector<Number> arg1 = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
vector<MegaNumber> arg2 = {0, 1, 2, 3, 4, 5, 6, 7 , 8, 9};
NumberGenerator game(arg1, arg2);
  for (int i = 0; i < 10; i++)
  {
      cout << game.pickNumbers() << endl;
  }
}

The last element doesn't get shuffled each time pickNumbers() is ran.