Cases with a changing string length

Question

JP 2013-6-19

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/79563-cases-with-a-changing-string-length

Hi, Im trying to make the following code work and it just wont seem to do what I want. NOTE - The string length of my variable is changing so for different cases I want a different interval.

 Astr = '123456789' 
     switch Astr    
      case strcmp(Astr([2:4,5:7]), '234567' ) 
           x = 5    
      case strcmp(Astr([3:6,6:8]), '789123' ) 
           x = 6   
      case strcmp(Astr([1:3,4:6]), '912345' )  
           x = 7    
      otherwise    
           x = 8
end

I think it has to do with the way Im defining the string values, it keeps outputting x = 8 (the otherwise case). Please let me know how to fix thanks!

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Iain 2013-6-19

What is it that you're actually trying to achieve? There may be a better way.

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Answer 1

David Sanchez 2013-6-19

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/79563-cases-with-a-changing-string-length#answer_89287

You are not using the switch-case properly. In your case, your code check the value of Astr and see if it equals any of the cases you define. Since none of the cases equal your Astr, it returns the otherwise case. The code is just right, the way you code what you want is not.