Extraction of unique arrays in a cell

Assume there is a cell of the size 1 by N. Each cell contains an array. Some of the arrays (of the same length) are equal. How can I remove duplicate ones? Is there a unique function for cells?

Answer 1

[Taylor]

One possible approach:

% Assume 'cellArray' is your 1xN cell array containing arrays
cellArray = {
    [1, 2, 3],
    [4, 5, 6],
    [1, 2, 3],  % Duplicate
    [7, 8, 9],
    [4, 5, 6]   % Duplicate
};

% Convert each cell's array to a string representation
arrayStrings = cellfun(@mat2str, cellArray, 'UniformOutput', false);

% Find unique string representations and their indices
[~, uniqueIndices] = unique(arrayStrings, 'stable');

% Use the unique indices to create a cell array without duplicates
uniqueCellArray = cellArray(uniqueIndices);

% Display the result
disp('Cell array with duplicates removed:');

Cell array with duplicates removed:

disp(uniqueCellArray);

    {[1 2 3]}
    {[4 5 6]}
    {[7 8 9]}