choose 4 random letters from 5 options in matlab

To randomly choose 4 letters from 5 available options, we can use the randperm function in Matlab. Here's an example code snippet:

main.m
options = ['a', 'b', 'c', 'd', 'e']; % available options
selected_indices = randperm(length(options), 4); % generate 4 random indices
selected_letters = options(selected_indices); % get the selected letters
disp(selected_letters); % print the selected letters
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In this code, we first define the available options as a character array. We then use the randperm function to generate 4 unique random indices between 1 and 5 (length of options). Finally, we use these indices to select the corresponding letters and display them.