Permutation of array elements

조회 수: 21 (최근 30일)
Andrea . 2015년 1월 28일
편집: Walter Roberson . 2018년 8월 21일
Hi, I have 3 array with different number of cells and a matrix of 1 row and 3 columns composed by the arrays.
ACTIVITY_WAKE = {'awake_in_bed','out_of_bed','out_bedroom'};
ACTIVITY_MORNING_TOILET = {'enter_toilet','sit_WC','wash','exit_toilet'};
ACTIVITY_BREAKFAST = {'prepare_breakfast','have_breakfast','wash_dishes'};
WAKE_UP = [ACTIVITY_WAKE ACTIVITY_MORNING_TOILET ACTIVITY_BREAKFAST];
I would like to generate WAKE_UP with random order, but when I use randperm command I have permutation of the element in single array, I only need to permute the array, like:
WAKE_UP = [ACTIVITY_WAKE ACTIVITY_BREAKFAST ACTIVITY_MORNING_TOILET] or
WAKE_UP = [ACTIVITY_MORNING_TOILET ACTIVITY_WAKE ACTIVITY_BREAKFAST ]

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채택된 답변

Matz Johansson Bergström 2015년 1월 28일
편집: Matz Johansson Bergström 님. 2015년 1월 28일
This seems to work
A = {'test a 1', 'test a 2'};
B = {'test b 1', 'test b 2'};
WAKE = [A',B'] %see below for explanation
WAKE(:, randperm(2))
If we simply write WAKE = [A,B], the vector will become
'test a 1' 'test a 2' 'test b 1' 'test b 2'
instead I write transpose the A and B elements, so WAKE = [A',B'] which gives
'test a 1' 'test b 1'
'test a 2' 'test b 2'
This should work in a similar way in your case, but I have not tested this.
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Sam Ferguson 2018년 8월 21일
Would there be a way to prevent repeats of the same combination?
Paolo 2018년 8월 21일
@Sam, please open a new question.

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