Cody

# Problem 42248. Return fibonacci sequence do not use loop and condition version 3

Solution 3128086

Submitted on 9 Oct 2020 by Rafael S.T. Vieira
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### Test Suite

Test Status Code Input and Output
1   Pass
% !/bin/cp fib.m safe % !/bin/rm *.* % !/bin/mv safe fib.m % Clean user's function from some known jailbreaking mechanisms functions={'!','feval','eval','str2func','str2num','regex','system','dos','unix','perl','assert','fopen','write','save','setenv','path','please','for','if','while','switch','global','figure'... 'round','roundn','fix','ceil','char','floor','\.','^','pow','\^','sscanf','persistent'}; fid = fopen('fib.m'); st = char(fread(fid)'); for n = 1:numel(functions) st = regexprep(st, functions{n}, 'error(''No fancy functions!''); %','ignorecase'); end fclose(fid); fid = fopen('fib.m' , 'w'); fwrite(fid,st); fclose(fid);

2   Pass
n = 2; f = fib(n); assert(isequal(f() + f(),f())); assert(isequal(f(),5));

3   Pass
n = 7; f = fib(n); assert(isequal(f() + f(),f())); assert(isequal(f() + f(),f())); assert(isequal(f(),233));

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