any one have code of --make valid fieldname.m or submit with configuration.m of weak 2 programing assignment of machine laerning on coursera

here is my code but it showing erroe

makeValidFieldName

function str = makeValidFieldName(str)

% From MATLAB doc: field names must begin with a letter, which may be

% followed by any combination of letters, digits, and underscores.

% Invalid characters will be converted to underscores, and the prefix

% "x0x[Hex code]_" will be added if the first character is not a letter.

isoct=exist('OCTAVE_VERSION','builtin');

pos=regexp(str,'^[^A-Za-z]','once');

if(~isempty(pos))

if(~isoct)

str=regexprep(str,'^([^A-Za-z])','x0x${sprintf(''%X'',unicode2native($1))}_','once');

else

str=sprintf('x0x%X_%s',char(str(1)),str(2:end));

end

end

if(isempty(regexp(str,'[^0-9A-Za-z_]', 'once' ))) return; end

if(~isoct)

str=regexprep(str,'([^0-9A-Za-z_])','_0x${sprintf(''%X'',unicode2native($1))}_');

else

pos=regexp(str,'[^0-9A-Za-z_]');

if(isempty(pos)) return; end

str0=str;

pos0=[0 pos(:)' length(str)];

str='';

for i=1:length(pos)

str=[str str0(pos0(i)+1:pos(i)-1) sprintf('_0x%X_',str0(pos(i)))];

end

if(pos(end)~=length(str))

str=[str str0(pos0(end-1)+1:pos0(end))];

end

end

submitWithConfiguration

function submitWithConfiguration(conf)

addpath('./lib/jsonlab');

parts = parts(conf);

fprintf('== Submitting solutions | %s...\n', conf.itemName);

tokenFile = 'token.mat';

if exist(tokenFile, 'file')

load(tokenFile);

[email token] = promptToken(email, token, tokenFile);

else

[email token] = promptToken('', '', tokenFile);

end

if isempty(token)

fprintf('!! Submission Cancelled\n');

return

end

try

response = submitParts(conf, email, token, parts);

catch

e = lasterror();

fprintf( ...

'!! Submission failed: unexpected error: %s\n', ...

e.message);

fprintf('!! Please try again later.\n');

return

end

if isfield(response, 'errorMessage')

fprintf('!! Submission failed: %s\n', response.errorMessage);

else

showFeedback(parts, response);

save(tokenFile, 'email', 'token');

end

end

function [email token] = promptToken(email, existingToken, tokenFile)

if (~isempty(email) && ~isempty(existingToken))

prompt = sprintf( ...

'Use token from last successful submission (%s)? (Y/n): ', ...

email);

reenter = input(prompt, 's');

if (isempty(reenter) || reenter(1) == 'Y' || reenter(1) == 'y')

token = existingToken;

return;

else

delete(tokenFile);

end

end

email = input('Login (email address): ', 's');

token = input('Token: ', 's');

end

function isValid = isValidPartOptionIndex(partOptions, i)

isValid = (~isempty(i)) && (1 <= i) && (i <= numel(partOptions));

end

function response = submitParts(conf, email, token, parts)

body = makePostBody(conf, email, token, parts);

submissionUrl = submissionUrl();

params = {'jsonBody', body};

responseBody = urlread(submissionUrl, 'post', params);

response = loadjson(responseBody);

end

function body = makePostBody(conf, email, token, parts)

bodyStruct.assignmentSlug = conf.assignmentSlug;

bodyStruct.submitterEmail = email;

bodyStruct.secret = token;

bodyStruct.parts = makePartsStruct(conf, parts);

opt.Compact = 1;

body = savejson('', bodyStruct, opt);

end

function partsStruct = makePartsStruct(conf, parts)

for part = parts

partId = part{:}.id;

fieldName = makeValidFieldName(partId);

outputStruct.output = conf.output(partId);

partsStruct.(fieldName) = outputStruct;

end

end

function [parts] = parts(conf)

parts = {};

for partArray = conf.partArrays

part.id = partArray{:}{1};

part.sourceFiles = partArray{:}{2};

part.name = partArray{:}{3};

parts{end + 1} = part;

end

end

function showFeedback(parts, response)

fprintf('== \n');

fprintf('== %43s | %9s | %-s\n', 'Part Name', 'Score', 'Feedback');

fprintf('== %43s | %9s | %-s\n', '---------', '-----', '--------');

for part = parts

score = '';

partFeedback = '';

partFeedback = response.partFeedbacks.(makeValidFieldName(part{:}.id));

partEvaluation = response.partEvaluations.(makeValidFieldName(part{:}.id));

score = sprintf('%d / %3d', partEvaluation.score, partEvaluation.maxScore);

fprintf('== %43s | %9s | %-s\n', part{:}.name, score, partFeedback);

end

evaluation = response.evaluation;

totalScore = sprintf('%d / %d', evaluation.score, evaluation.maxScore);

fprintf('== --------------------------------\n');

fprintf('== %43s | %9s | %-s\n', '', totalScore, '');

fprintf('== \n');

end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%

% Service configuration

%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function submissionUrl = submissionUrl()

submissionUrl = 'https://www-origin.coursera.org/api/onDemandProgrammingImmediateFormSubmissions.v1';

end