Created
November 7, 2012 11:06
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Emular una función de probabilidad
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// Array con probabilidades | |
$arrayProbabilities = ( | |
20, | |
20, | |
10, | |
1, | |
20, | |
10 | |
) | |
// Generamos un número entre 0 y la probabilidad más alta | |
$probability = rand(0, max($arrayProbabilities)); | |
$numElements = (count($arrayProbabilities)-1); | |
do { | |
// Generamos un número entre 0 y el número de elementos del array | |
$element = rand(0, $numElements); | |
// Si la probabilidad obtenida anteriormente es mayor que la probabilidad que aparezca ese elemento, | |
// se vuelve a calcular el elemento, hasta que obtengamos un elemento con una probabilidad inferior | |
} while ($probability > $arrayProbabilities[$element]); | |
echo $element; |
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