What have you tried so far? How do you want to store the results?
The solution is more or less trivial with a loop:
A = {[1,2,3;4,5,6], [11,22], [33;55;66;7]}
s = 5;
nA = numel(A);
Match = cell(1, nA);
for iA = 1:nA
match{iA} = find(A{iA} == s);
end
Or perhaps:
nA = numel(A);
Match = cell(nA, 3); % Pre-allocate
iMatch = 0;
for iA = 1:nA
[i1, i2] = find(A{iA} == s);
if ~isempty(i1)
iMatch = iMatch + 1;
Match{iMatch, 1} = iA; % Index of the cell
Match{iMatch, 2} = i1; % Row and column indices
Match{iMatch, 3} = i2;
end
end
Match = Match(1:iMatch, :); % Crop unused elements
Now Match{:, 1} is the cell element with a match, and Match{:, 2:3} are the row and column indices.
Maybe this is enough:
Match = cellfun(@(c) find(c == s), A, 'uniform', false);
Then Match{k} contains the linear indices, if matching elements are found.
