CareerCup

{
for (int i = ary.Length – 1; i >= 0; i++)
{
int r = rnd.Next(0, i + 1);

int tmp = ary[i];
ary[i] = ary[r];
ary[r] = tmp;
}
}

you can Collections.Shuffle() method for the purpose
refer this
"stackoverflow[dot]com/questions/7433506/java-program-design-card-shuffler"

Fisher–Yates shuffle (aka Knuth Shuffle)

measure occurrances of each perumation over a large testcase...

!EXCLUSIVE!
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Наталья Немец – СОН (2009)
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Наталья Немец (feat. Reflex-music) - глаза на песке (NEW 2010)
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sDF

Suppose an array of 52 elements represents of a deck of card.
iterate thru each element in the array.
for each element, use a random function to generate an integer from 0-51.
swap the contents of current element with the element at random number generated index.
that's all.

To test it, we need to make sure there are no consecutive elements in the array.

{Can you write a code for this}

DeckOfCards.h:

#pragma once

#include <string>
using std::string;

class DeckOfCards
{
public:
	DeckOfCards(void);
	~DeckOfCards(void);
	void shuffleCards();
	void printDeck();
private:
	const static short CARDS_PER_DECK = 52;
	const static short CONTENT_COUNT = 13;
	const static short TYPE_COUNT = 4;

	enum Content { ONE = 0, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, JACKS, QUEENS, KINGS};
	enum Type {SPADES = 0, HEARTS, DIAMONDS, CLUBS};
	
	static const char* toString(Content pContent);
	static const char* toString(Type pType);
	struct card {
		Content content;
		Type type;

	private:
		string contToString(){
		switch (content){
			case 0:
				return "ONE";
			case 1:
				return "TWO";
			case 2:
				return "THREE";
			case 3:
				return "FOUR";
			case 4:
				return "FIVE";
			case 5:
				return "SIX";
			case 6:
				return "SEVEN";
			case 7:
				return "EIGHT";
			case 8:
				return "NINE";
			case 9:
				return "TEN";
			case 10:
				return "JACKS"; 
			case 11:
				return "QUEENS";
			case 12:
				return "KINGS";
			default:
				return 0;
			}
		}

		string typeToString(){
			switch (type){
				case 0:
					return "SPADES";
				case 1:
					return "HEARTS";
				case 2:
					return "DIAMONDS";
				case 3:
					return "CLUBS";
				default:
					return 0;
			}
		}
	public:
		string toString(){
			string lTemp(contToString());
			lTemp.append(" of ");
			lTemp.append(typeToString());
			return lTemp;
		}
	};
	card deck[CARDS_PER_DECK];
};

DeckOfCards.cpp:

#include "DeckOfCards.h"

#include <cstdlib>
using std::rand;

#include <ctime>
using std::time;

#include <iostream>
using std::cout;
using std::endl;

DeckOfCards::DeckOfCards(void)
{
}

DeckOfCards::~DeckOfCards(void)
{
}

void DeckOfCards::shuffleCards(){
	srand(static_cast<unsigned int> (time(0)));
	card *lCard = new card();
	for(int i = 0; i < CARDS_PER_DECK; i++){
		lCard->content = Content(rand() % CONTENT_COUNT);
		lCard->type = Type(rand() % TYPE_COUNT);
		deck[i] = *lCard;
		lCard = new card();
	}
}

void DeckOfCards::printDeck(){
	for(int i = 0; i < CARDS_PER_DECK; i++){
		cout << "Card[" << i << "]: " << deck[i].toString() << endl;
	}

}}
Than you just call shuffleCards() and printDeck()...