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Test | Status | Code Input and Output |
---|---|---|
1 | Pass |
!cp diff_digits.m safe
!rm *.*
!mv safe diff_digits.m
% Clean user's function from some known jailbreaking mechanisms
fid = fopen('diff_digits.m');
st = regexprep(char(fread(fid)'), '!', 'error(''No shell commands!''); %');
st = regexprep(st, 'feval', 'error(''No fancy functions!''); %');
st = regexprep(st, 'str2func', 'error(''No fancy functions!''); %');
st = regexprep(st, 'regex', 'error(''No fancy functions!''); %');
st = regexprep(st, 'system', 'error(''No shell commands!''); %');
st = regexprep(st, 'dos', 'error(''No shell commands!''); %');
st = regexprep(st, 'unix', 'error(''No shell commands!''); %');
st = regexprep(st, 'perl', 'error(''No external languages commands!''); %');
st = regexprep(st, 'java', 'error(''No external languages commands!''); %');
st = regexprep(st, 'assert', 'error(''No overwriting!''); %');
fclose(fid)
fid = fopen('diff_digits.m' , 'w');
fwrite(fid,st);
fclose(fid)
ans =
0
ans =
0
|
2 | Pass |
%%
start=1000; finish=1023; y_correct = 1;
assert(isequal(diff_digits(start,finish),y_correct))
|
3 | Pass |
%%
start=1000; finish=9999; y_correct = 4536;
assert(isequal(diff_digits(start,finish),y_correct))
|
4 | Pass |
%%
start=1234; finish=5678; y_correct = 2273;
assert(isequal(diff_digits(start,finish),y_correct))
|
5 | Pass |
%%
assert(isequal(diff_digits(4321,6789),1210))
|
6 | Pass |
%%
assert(isequal(diff_digits(1988,2012),0))
|
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