Don't know how to fix... Index in position 1 exceeds array bounds (must not exceed 1)

Question

Brian Peoples 2019-2-28

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/447422-don-t-know-how-to-fix-index-in-position-1-exceeds-array-bounds-must-not-exceed-1

回答： Star Strider 2019-2-28

Hello--

I keep getting this error and i've tried to fix it for so long. it is occuring on lines between the lines specified bellow (I bolded them). If anyone can figure out why I would appreciate it. I know it is an indexing error, but I can't figure out where I messed up.

inputs

%Roulette
RouletteRounds = 10;
RoulettePlayers = zeros(RouletteRounds+1,10);
initial_intt = randi([5000,25000],1,10);
RoulettePlayers(1,:) = initial_intt
Bet = zeros(1,10);
BetType = zeros(3,10);

code (look bellow for lines where error is occuring)

for l = 1:RouletteRounds
x = (randi([2 12],1,10)) *.01; %random number between 2-12%
Bet = x .* RoulettePlayers(l,:); %creates a vector Bet that is 2-12% of in pocket cash
for ll = 1:RouletteRounds
    if RoulettePlayers(1,ll) > 100 %if cash is greater than 100
        if Bet(1,ll) < 100 %enters if statement: if bet is less than 100, = 100
            Bet(1,ll) = 100;
        else
        end
    else
     Bet(1,ll) = 0;
    end
end %2nd for loop
BetType(1,:) = randi([-4,-1],1,10);
for r = 1:RouletteRounds %for loop creating different bets and the intervals
    if BetType(1,r) == -3
        BetType(2,r) = randi([0,36])
    elseif BetType(1,r) == -4
        BetType(2,r) = randi([0,36])
        BetType(3,r) = randi([0,36])
    end
end
Roll = randi([0,36],1,10)
%9 compare the actual roll and seeing if they made money     
for t = 1:RouletteRounds
    if BetType(1,t) == -3
        if Roll(1,t) == BetType(2,t) %if bet is equal to bettype column 2
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) + Bet(l,t)*36
        else
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) - Bet(l,t)
        end
    elseif BetType(1,t) == -4
        if Roll(1,t) == BetType(2,t) || Roll(1,t) == BetType(3,t) %if bet is equal to bettype column 2,3
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) + Bet(l,t)*18
        else
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) - Bet(l,t)
        end
    elseif BetType(1,t) == -1
        if Roll(1,t) == 1:18
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) + Bet(l,t)
        else
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) - Bet(l,t)
        end
    elseif BetType(1,t) == -2
        if Roll(1,t) == 19:36
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) + Bet(l,t)
        else
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) - Bet(l,t)
        end
    end
end
   
HouseEarnings = HouseEarnings + (sum(RoulettePlayers(1,:)) - sum(RoulettePlayers(end,:)))
 
end %(1st for loop)

The error is mainly occuring on these lines within the loop:

if BetType(1,t) == -3
        if Roll(1,t) == BetType(2,t) %if bet is equal to bettype column 2
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) + Bet(l,t)*36
        else
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) - Bet(l,t)
        end
    elseif BetType(1,t) == -4
        if Roll(1,t) == BetType(2,t) || Roll(1,t) == BetType(3,t) %if bet is equal to bettype column 2,3
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) + Bet(l,t)*18
        else
            RoulettePlayers(l+1,t) = RoulettePlayers(l,t) - Bet(l,t)
        end