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Creating an array by repeating the index of a cell by the length of the cell

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Ryan Waite
Ryan Waite 2017-4-27
关闭： MATLAB Answer Bot 2021-8-20
I have a cell array of data shown below. I would like to create a new array (output) where the index of the cell is repeated "x" times. Where "x" is equal to the length of that specific cell. I can do this with for loops, but can it be done with a simple function?
data = {[1,2,3], [4,5], [6], [7,8,9,10]}
% output = [1,1,1,2,2,3,4,4,4,4]

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John Malik
John Malik 2017-4-28
repelem(1:length(data), cellfun(@length, data))

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