convert each character of an array to int

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Mireia Boneta Camí 2020-10-24

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/624738-convert-each-character-of-an-array-to-int

评论： Ameer Hamza 2020-10-24

I have a char array like this '10000111101010110101' and I want to convert each 0 and 1 to int and obtain [1 0 0 0 0 1 1 ...]. I'd like to do it without fors, is it possible?

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采纳的回答

Ameer Hamza 2020-10-24

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https://ww2.mathworks.cn/matlabcentral/answers/624738-convert-each-character-of-an-array-to-int#answer_523283

在 MATLAB Online 中打开

Easy peasy

x = '10000111101010110101';
y = x - '0'

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drummer 2020-10-24

how does this work?

Ameer Hamza 2020-10-24

在 MATLAB Online 中打开

If you look at the ASCII code for the character, you can see what is happening.

For example,

x = '10000111101010110101';
y = x + 0

Result

>> y
y =
  Columns 1 through 17
    49    48    48    48    48    49    49    49    49    48    49    48    49    48    49    49    48
  Columns 18 through 20
    49    48    49

So, if you subtract the ascii code for '0', you will get actual numbers.

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