Php code to display the probability for the given number

Hi

I need to display the probability for the given number. Suppose if the given number is 2. It should display (W - Win and L - Loss)

W - W
W - L
L - W
L - L

It should generate the probability dynamically for the given number.I dont know how to do this using php.. Please help...Its Urgent...


Thanks & Regards
P.Balakrishnan

 

maybe you should explain what exactly "probability for the given number" means, and why exactly you need to find it.

 

Hi

I need to generate probability for win and loss in round...If there are 2 rounds the probability will be
W-W
W-L
L-W
L-L

and if there are three rounds i want to generate the probability dyanamically..I need this for the below query

SELECT team_id, GROUP_CONCAT( play_result, round_no
ORDER BY round_no
SEPARATOR '-' ) AS team_res, SUM( play_total ) AS total
FROM tbl_play
GROUP BY team_id
HAVING team_res = 'W1-W2' || team_res = 'W1-L2' || team_res = 'L1-W2' || team_res = 'L1-L2'
ORDER BY total DESC

In this above query the win and loss is hardcoded for two rounds...If there is 3 round
i have to write like this

SELECT team_id, GROUP_CONCAT( play_result, round_no
ORDER BY round_no
SEPARATOR '-' ) AS team_res, SUM( play_total ) AS total
FROM tbl_play
GROUP BY team_id
HAVING team_res = 'W1-W2-W3' || team_res = 'W1-W2-L3' || team_res = 'W1-L2-W3' etc...

So only i need to generate the probability of given number(i.e round number.)


Please help

 

are you wanting something like this:

0 L L L L L 5
1 W L L L L 4
2 W W L L L 3
3 W W W L L 2
4 W W W W L 1
5 W W W W W 0

 

No not like that..

For example if a team plays 1 round the probability will be W or L (W for Win and L for Loss)

if a team plays 2 round the probability will be
W - W
W - L
L - W
L - L

if a team plays 3 round the probability will be
W - W - W
W - W - L
W - L - W
L - W - W
L - W - L
W - L - L
L - L - W
L - L - L

I want to print like this for the n number of rounds.

 

I know I've done some code like this before that was very neat and proper, but I can't find it, and it was in C++.

Curiosity got the best of me, so I wrote some very, very hacked up PHP code that will do it for you.

<?
print_r(probableOutcomes(4));

function probableOutcomes($num) {
	$resultArray = array();
	for ($i = 0; $i < $num; $i++) {
		$binaryString .= "1";
	}
	
	for ($i = 0; $i <= bindec($binaryString); $i++) {
		$resultString = str_pad(decbin($i), $num, "0", STR_PAD_LEFT);
		$resultString = str_replace("0", "W", $resultString);
		$resultString = str_replace("1", "L", $resultString);
		
		array_push($resultArray, $resultString);
	}
	
	return $resultArray;
}

?>

Code (markup):

The above example outputs

Array
(
    [0] => WWWW
    [1] => WWWL
    [2] => WWLW
    [3] => WWLL
    [4] => WLWW
    [5] => WLWL
    [6] => WLLW
    [7] => WLLL
    [8] => LWWW
    [9] => LWWL
    [10] => LWLW
    [11] => LWLL
    [12] => LLWW
    [13] => LLWL
    [14] => LLLW
    [15] => LLLL
)

Code (markup):

I really can't stress how janky the above code may be. I've been up for a while, but it does produce correct output for your situation.

 

Thanks a lot...It works....


Regards
P.Balakrishnan

 

I wouldn't use that with very large numbers though. You'll almost definitely run out of memory.

 

The code takes 2^n as it displays all binary numbers from 0 to 11...ntimes . But there are 2^n numbers to be displayed and therefore i doubt if a solution exists which runs with a lesser running time.

 

How is it possible to have WWWW or LLLL or any scenario where every team wins? If they are playing against each other then at least 1 of them has to win or lose depending...

you could probably use the Binomial Coefficient in some way to calculate this: http://en.wikipedia.org/wiki/Binomial_coefficient

 

It generates all possible outcomes for a single team is how. the other team doesn't come into question.

 

Assume it is a coin toss and Head = W, Tails = L and n is the number of times its tossed. Output is all possible outcomes. This is how i understood

 

Just make an array of probabilities