[ java ] random value

Random Distibution

Concept : Sum of (V[0] to V[i-1]) <= N <= Sum of (V[0] to V[i])

V : List of values

N : random number

when V[i] is returned

 

Returns a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive)

int randomValue = java.util.Random.nextInt(int sumWeight)/sourcecode]

 

Psudocode

for (T rand : rands)
{
runningTotal += rand.weight;

if (randomValue < runningTotal)
return rand;

}

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