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Viewing projects/DealOrNoDeal/deal_or_no_deal.phps
<?
/*
* A quick script to emulate runnings of Deal or No Deal's box selection stuff
*/
$number_of_times_last_two = 0;
$number_of_times_switching_won = 0;
$number_of_times_switching_lost = 0;
function runGame()
{
global $number_of_times_last_two;
global $number_of_times_switching_won;
global $number_of_times_switching_lost;
$boxes = array();
// Loop through 26 boxes and fill them with stuff, and put 200,000 in the last box.
for ($i = 0; $i <= 25; $i++)
{
if ($i == 25)
$boxes[] = 200000;
else
$boxes[] = $i*10;
}
// Shuffle the order, before I discovered shuffle()
$box_open_order = array_rand($boxes, 26);
// Open the boxes in the random order
for ($i = 0; $i <= 25; $i++)
{
$opened_box_idx = $box_open_order[$i];
$opened_box = $boxes[$opened_box_idx];
// If we're in the last 2 boxes...
if ($i == 24 || $i == 25)
{
// and the box being opened is the $200,000...
if ($opened_box == 200000)
{
$number_of_times_last_two++;
// if it's the 2nd last box...
if ($i == 24)
{
// ...switch and see if we win
if ($boxes[25] == 200000)
$number_of_times_switching_won++;
// ...otherwise, we lose
else
$number_of_times_switching_lost++;
}
else if ($i == 25) // and repeat above
{
if ($boxes[24] == 200000)
$number_of_times_switching_won++;
else
$number_of_times_switching_lost++;
}
}
}
}
}
// How many loops do we want to do?
$num_loops = 10000;
for ($i = 0; $i < $num_loops; $i++)
runGame();
print "Number of times 200,000 appeared in the final 2: $number_of_times_last_two (".($number_of_times_last_two/$num_loops).")\n";
print "Number of times switching won: $number_of_times_switching_won\n";
print "Number of times switching lost: $number_of_times_switching_lost\n";
/*
* Sample output from 10,000 loops:
* Number of times 200,000 appeared in the final 2: 781 (0.0781)
* Number of times switching won: 383
* Number of times switching lost: 398
*/
?>
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