Multiple Dice Rolls Help
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So basically, I have to write a function that simulates the rolling of a
given number of six sided dice a given number of times. The function should
take
two input arguments, the number of dice (NumDice) that will be rolled in each
experiment and the total number (NumRolls) of times that the dice will be
rolled. The output of the function will be a vector SumDice of length NumRolls
that contains the sum of the dice values in each experiment. I'll have to make
a histogram afterwards (which I havent done yet)
Here's what I've got so far, not sure how to make it a sum of dice:
% function SumDice=RollDice(NumDice,NumRolls)
distribution=zeros(6,1);
for roll=1:NumRolls
diceValues = randi(6,[NumDice 1]);
for die = 1 : NumDice
distribution(diceValues(die)) = distribution(diceValues(die)) +1;
end
end
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Accepted Answer
Walter Roberson
on 21 Nov 2012
Sum of dice is just sum(diceValues). And you will not need the "for die" loop as you only get a single sum.
(By the way, the entire function can be done as a single expression, including the histogram.)
4 Comments
More Answers (1)
Harshit
on 21 Nov 2012
Here is what I feel will work fine
% function SumDice=RollDice(NumDice,NumRolls)
distribution=zeros(NumDice*6,1);
for roll=1:NumRolls
diceValues = randi(6,[NumDice 1]);
totaldiceValue = sum(diceValues);
distribution(totaldiceValue) = distribution(totaldiceValue) +1;
end
end
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