How to remove a certain amount of repeating elements from an array
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Say that I am given an array [2 2 2 3 5 6] from a random number generator
I would like to be able to input an array of [2 2 ]; and be left with an array of [2 3 5 6]
I'm unsure as how to accomplish this; almost everything else I've tried will either delete all copies of the inputted number, or simply only delete one of an inputted number.
Any help that could be offered on this would be greatly appreciated!
回答（2 个）
Davide Masiello
2022-2-6
I am not sure I undestand your objective but maybe this could help
A = [2 2 2 3 5 6];
A = unique(A);
Which yields
A = [2 3 5 6];
Maybe this:
given = [2 2 2 3 5 6];
input = [2 2];
nG = numel(given);
nI = numel(input);
i = nG-nI+1;
while i > 0
if isequal(given(i+(0:nI-1)),input)
given(i+(0:nI-1)) = [];
i = i-nI;
else
i = i-1;
end
end
disp(given);
But notice:
given = [2 2 2 2 3 5 6];
input = [2 2];
nG = numel(given);
nI = numel(input);
i = nG-nI+1;
while i > 0
if isequal(given(i+(0:nI-1)),input)
given(i+(0:nI-1)) = [];
i = i-nI;
else
i = i-1;
end
end
disp(given);
It's not clear from the description what should happen in the second case when [2 2] matches 2 separate times.
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2022-2-6
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