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# Problem 733. Extract Built In Functions and Toolbox Functions from String or Function Handle

Solution 3696548

Submitted on 17 Nov 2020 by Are Mjaavatten
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### Test Suite

Test Status Code Input and Output
1   Pass
fh_str='log2(x)+smooth3(x,y)+abs(2)+log10(5)'; exp_str='abs log10 log2 smooth3'; assert(isequal(find_functions(fh_str),exp_str))

2   Pass
fh_str='for k=log10(x):log2(x)+abs(x)'; exp_str='abs for log10 log2'; assert(isequal(find_functions(fh_str),exp_str))

3   Pass
fh_str=@(x)x^2+sin(x)-cos(x); exp_str='cos sin'; assert(isequal(find_functions(fh_str),exp_str))

4   Pass
fh_str='@(x)x^2+sin(x)-cos(x)'; exp_str='cos sin'; assert(isequal(find_functions(fh_str),exp_str))

5   Pass
fh_str='filter2(x,A)+filter(x)-cos(x) expm(z)'; exp_str='cos filter expm filter2'; assert(isequal(find_functions(fh_str),exp_str))

6   Pass
fh_str='smooth3(x,y)-filter(x)+abs(n)+filter2(u)+sin(x)+numel(z)'; exp_str='abs filter numel sin filter2 smooth3'; assert(isequal(find_functions(fh_str),exp_str))

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