Cody

Solution 114478

Submitted on 18 Jul 2012 by Grzegorz Knor
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Test Suite

Test Status Code Input and Output
1   Pass
%% % Courtesy of Aurelien Queffurust filetext = fileread('quadratic.m'); assert(isempty(strfind(filetext, '*')),'sign * forbidden') assert(isempty(strfind(filetext, 'mtimes')),'mtimes forbidden') assert(isempty(strfind(filetext, 'cross')),'cross forbidden') assert(isempty(strfind(filetext, 'prod')),'prod forbidden') assert(isempty(strfind(filetext, 'cumprod'))) assert(isempty(strfind(filetext, 'times'))) assert(isempty(strfind(filetext, 'mldivide'))) assert(isempty(strfind(filetext, 'mrdivide'))) assert(isempty(strfind(filetext, '/')),'/ forbidden') assert(isempty(strfind(filetext, '\'))) assert(isempty(strfind(filetext, '-'))) assert(isempty(strfind(filetext, '^')),'^ forbidden') assert(isempty(strfind(filetext, 'dot'))) assert(isempty(strfind(filetext, '''')),'string forbidden') assert(isempty(strfind(filetext, 'num2str'))) assert(isempty(strfind(filetext, 'int2str'))) assert(isempty(strfind(filetext, 'dec2bin'))) assert(isempty(strfind(filetext, 'roots')))
2   Pass
%% a=1;b=1;c=1; rad=sqrt(b*b-4*a*c); xe(1)=(-b+rad)/(2*a); xe(2)=(-b-rad)/(2*a) xq = quadratic(a,b,c) assert(isequal(round(1e6*xq)/1e6,round(1e6*xe)/1e6) || isequal(round(1e6*xq(2:-1:1))/1e6,round(1e6*xe)/1e6))
xe = Column 1 -0.500000000000000 + 0.866025403784439i Column 2 -0.500000000000000 - 0.866025403784439i ans = Column 1 -0.500000000000000 + 0.866025403784438i Column 2 -0.500000000000000 - 0.866025403784438i xq = Column 1 -0.500000000000000 + 0.866025403784438i Column 2 -0.500000000000000 - 0.866025403784438i
3   Pass
%% a=1;b=4;c=1; rad=sqrt(b*b-4*a*c); xe(1)=(-b+rad)/(2*a); xe(2)=(-b-rad)/(2*a) xq = quadratic(a,b,c) assert(isequal(round(1e6*xq)/1e6,round(1e6*xe)/1e6) || isequal(round(1e6*xq(2:-1:1))/1e6,round(1e6*xe)/1e6))
xe = -0.267949192431123 -3.732050807568877 ans = -3.732050807568877 -0.267949192431123 xq = -3.732050807568877 -0.267949192431123
4   Pass
%% a=1;b=4;c=1; a=a+rand rad=sqrt(b*b-4*a*c); xe(1)=(-b+rad)/(2*a); xe(2)=(-b-rad)/(2*a) xq = quadratic(a,b,c) assert(isequal(round(1e6*xq)/1e6,round(1e6*xe)/1e6) || isequal(round(1e6*xq(2:-1:1))/1e6,round(1e6*xe)/1e6))
a = 1.760945615012275 xe = -0.286012800251771 -1.985494034428139 ans = -1.985494034428139 -0.286012800251771 xq = -1.985494034428139 -0.286012800251771