How to convert characters array into integer number array

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Gova ReDDy 2014-4-9

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https://ww2.mathworks.cn/matlabcentral/answers/125079-how-to-convert-characters-array-into-integer-number-array

评论： Gova ReDDy 2014-4-9

Hello,

I have a text file in which all the contents are characters like a,b,c,d…z . Can somone explain how to convert theses alphabets in txt file into numbers like a corresponds to1, b corresponds to 2 ,in the converted file.

Thanks.

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采纳的回答

Azzi Abdelmalek 2014-4-9

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/125079-how-to-convert-characters-array-into-integer-number-array#answer_132803

在 MATLAB Online 中打开

str='I have a text file in which all the contents are characters like a,b,c,d…z . Can somone explain how to convert theses alphabets in txt file into numbers like a corresponds to1, b corresponds to 2 ,in the converted file'
s='a':'z'
for k=1:numel(s)
  str=regexprep(str,s(k),num2str(k),'ignorecase');
end
str

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Azzi Abdelmalek 2014-4-9

在 MATLAB Online 中打开

fid = fopen('change.txt');
str= textscan(fid,'%s');
fclose(fid)
str=str{:}
s='a':'z'
for k=1:numel(s)
  str=regexprep(str,s(k),num2str(k),'ignorecase');
end
str