Ajutor functie PHP care sa genereze numere random

[JohnDoe]

Am un exercitiu de facut, trebuie un algoritm (in functia big_dice() ) care sa foloseasca functia dice() si sa returneze numere random de la 1-100, ma puteti ajuta?

Codul este asta

<?php
/*
* Without using the rand() function, can you make a big_dice() function
* which returns a random int between 1-100, with even distribution
*
* You can and must use the dice() function within the big_dice() function
*
* Some simple testing code is included at the bottom to ensure
* even distribution and to calculate run-time.
* 
* DELIVERABLES:
*
* -- All code, PHP files, etc., necessary to run your solution
* -- A Google Docs graph of the distribution of your results from the
* test function below

/**
* This is your only input function (use instead of rand())
* @ return int
*/
function dice() {
   return rand(1, 6);
}

/**
* Here's the test -- create a random number between 1 and 100
* @ return int $result number between 1 and 100
*/
function big_dice() {
   /*

   figure out how to use the dice() function (as much as you like)
   and just about anything else to generate a
   random number between 1 and 100, with even distribution

   but you can not use the rand() function or it's variants...
   you can only use (and must use) the dice() function to generate it.

   dice();

   */
   return $result;
}


/**
* And here's the test of the big_dice() function
* echo's to page
* @ return null
*/
function test_big_dice($test_limit = 100000) {
        $big_dice_rolls = array();
        $start = microtime(true);
        for ($i=0; $i<$test_limit; $i++) {
       $big_dice_rolls[] = big_dice();
   }
   $stop = microtime(true);
   $duration = round((($stop - $start)), 4);
   $breakdown = array_count_values($big_dice_rolls);
   arsort($breakdown); // anomolies would be at the top or bottom
   echo "Tested {$test_limit} rolls in ~{$duration} sec<br/>";
   echo "Ended up with ".count($breakdown)." total outputs<br/>";
   foreach ( $breakdown as $int => $occurances ) {
       $pecentage = round($occurances / $test_limit * 100, 2);
       echo "{$int} => [{$pecentage}%] {$occurances}<br/>";
   }
}

# might as well test this thing!
test_big_dice();

?>

Edited November 4, 2015 by JohnDoe

[S.L.C]

Dap. Nu am citit comentariul. Revin cu un edit.

EDIT:

Nu are rost. K0mmendante a postat o solutie.

Edited November 4, 2015 by S.L.C

[K0mmendante]

PHP code - 29 lines - codepad

Happy now?

[Byte-ul]

Daca vrei ca numerele sa aiba aceeasi sansa de a fi extrase, fa un numar in baza 6 (generezi numarul cu dice()-1, astfel incat sa ai si 0) cu ajutorul acelei functii.

Ai aici niste exemple folosind baza 2: https://rstforums.com/forum/104367-generarea-unui-numar-aleator.rst