How to return the index of a cell array?

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Sara Al Shamsi
Sara Al Shamsi 2016-5-23
编辑： Nut 2016-5-23
Hi,
My code consists of 3 parts:
1- to select randomly a "cell" from a cell array. 2- return the index of the selected "cell". 3- delete the selected cell from the original cell array.
I did the first part and I got:
X =
[ 98.5004]
[4x1 double]
[5x1 double]
Then, I wanted to select a cell randomly from X and I got (example):
[4x1 double]
which is the second cell.
So, How to return its index? (manually its index is X(2)). what if I have a lot of cells? I know that "find" can be used for normal matrices but when I tried to do the same for the cell arrays, it didn't work! I read about the "cellfun" but it confused me!
last part depends on the second part! I will not be able to delete the selected cell from (X) without knowing its index! I want to delete it because when I will select randomly again from X, " I don't want to select again the same cell!

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Nut
Nut 2016-5-23
编辑：Nut 2016-5-23
Hi,
is this example good for you?
X{1} = 1;
X{2} = [2 2 2 2];
X{3} = [3 4 5 6 7];
random_index = randi(length(X));
random_cell = X(random_index);
X{random_index} = [];
X = X(~cellfun('isempty',X));

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