Filter/identify characters within a cell array

Question

Ole Hansen 2012-7-5

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https://ww2.mathworks.cn/matlabcentral/answers/42794-filter-identify-characters-within-a-cell-array

Say you have a cell array:

cell_array={'Kh','8h','8d','Kd','Ks'}

where h=hearts, d=diamonds, s=spades. In poker, the given combination would correspond to a full house (i.e. a pair and a set).

How do I identify a full house and not a set, a pair or two pairs?

As of now, I identify a set by searching for 3 identical values, e.g. three kings:

    idKings=cellfun(@(x)any(ismember('K',x)),cell_array);
    if sum(idKings)==3; 
       ...
    end

but how do I apply rules such that a full house is identified, and not a pair, a set or two pairs?

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Answer 1

Andrei Bobrov 2012-7-5

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https://ww2.mathworks.cn/matlabcentral/answers/42794-filter-identify-characters-within-a-cell-array#answer_52625

编辑：Andrei Bobrov 2012-7-5

在 MATLAB Online 中打开

try this is code

value1 = cellfun(@(x)x(1),cell_array,'un',0);
[a,b,b] = unique(value1);
i1 = histc(b,1:max(b));
t = ismember(a,'K');
out = all(i1(t) == 3 & i1(~t) == 2);

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Ole Hansen 2012-7-5

Interesting. I havent thought about employing a histc. Thank you for the idea!

I thought that one could easily modify the "full house approach" to a simpiler case: two pair. However, it actually seems more difficult since one does not need to consider only 2 alike and 3 others alike, but rather 2 alike in two different pairs but also a third single value.

How does one identify these?

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