Comparing different sized arrays in Matlab

Question

I need to compare two different arrays in Matlab. It's going to be used for a Yahtzee game. If I have an array that contains [1 2 3 4] and an array that contains [1 2 3 4 5], how do I check if the first array is contained within the second array. I just need to know a T/F result, not anything about which elements are missing, etc.

Pursuit · Accepted Answer · 2013-03-15 18:21:59Z

4

ismember will do it. For example:

x = [1 2 3 4]
y = [1 2 3 4 5]
all(ismember(x,y))

You can also use setdiff. For example:

isempty(setdiff(x,y))

answered Mar 15, 2013 at 18:21

Pursuit

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2 Comments

Jason S Over a year ago

thanks... idk why you have to take this obscure route to check strict equality though. :-(

Pursuit Over a year ago

For strict equality, use isequal or isequalwithequalnans. This question was to check for set subset.

user2041376 · Accepted Answer · 2013-03-15 19:01:22Z

0

another option,

all(intersect(x,y)==x)

but ismember is probably more efficient....

answered Mar 15, 2013 at 19:01

user2041376

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