How to use for loop rather than nesting if loop

1 view (last 30 days)
I want to use this code to subtract one value from each number in the histogram when all have been selected to find the new number with zero counts. This code worked (since there are two if loops with one nested) for the first two times 1 is subtracted from cdiff, but then returns the error 'Unbalanced or unexpected parenthesis or bracket.' : %check if Cdiff is empty:
if isempty(C_diff)
fprintf('C_diff is empty (all numbers have drawn once) \n');
cdiff_counts= counts - 1;%cdiff_data_vector = reshape(data,[9,numel(data)]);
C_diff = find(cdiff_counts==0);%return vector of values with 0
fprintf('By subtracting 1 count for all numbers, the new C_diff is %d\n', C_diff);
if isempty(C_diff)
fprintf('C_diff is empty (all numbers have drawn once) \n');
cdiff_counts= cdiff_counts - 1;%cdiff_data_vector = reshape(data,[9,numel(data)]);
C_diff = find(cdiff_counts==0);%return vector of values with 0
fprintf('By subtracting 1 count for all numbers, the new C_diff is %d\n', C_diff);
end
else
fprintf('C_diff is %d\n', C_diff);%
end
Replacing the first 'if' with 'for' returns 'Unbalanced or unexpected parenthesis or bracket.'
How can I get this to occur until C_diff is no longer an empty array?
if isempty(C_diff)
fprintf('C_diff is empty (all numbers have drawn once) \n');
cdiff_counts= counts - 1;%cdiff_data_vector = reshape(data,[9,numel(data)]);
C_diff = find(cdiff_counts==0);%return vector of values with 0
fprintf('By subtracting 1 count for all numbers, the new C_diff is %d\n', C_diff);
else
fprintf('C_diff is %d\n', C_diff);%
end
Best regards,
Alex

Accepted Answer

Jan
Jan on 27 Jan 2018
Edited: Jan on 27 Jan 2018
while isempty(C_diff)
cdiff_counts = counts - 1;
C_diff = find(cdiff_counts == 0);
end
It looks like C_diff contains positive values initially, maybe only integers. Then this is more efficient:
minValue = min(counts); % [EDITED]
C_diff = find(C_diff = minValue);
  3 Comments
Alex
Alex on 28 Jan 2018
Thank you! I will keep that in mind for future questions. It is not necessary, but if you are interested, here is the "counts" data for numbers 1:1:49. The number 32 should be returned.

Sign in to comment.

More Answers (0)

Categories

Find more on Loops and Conditional Statements in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by