Strings with changing length and cases

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!

Answer 1

[Azzi Abdelmalek]

It's more appropriate to use IF statement

Astr = '123456789'
if isequal(Astr([2:4,5:7]), '234567' )
  x = 5
elseif isequal(Astr([3:6,6:8]), '789123' )
  x = 6
elseif isequal(Astr([1:3,4:6]), '912345' )
  x = 7
else
  x = 8
end

[JP]

thanks thats perfect =)

Answer 2

[Iain]

Assuming that you've shown us "everything". Theres a better way:

x = 8 - (Astr(3) == '2') - 2*(Astr(3) == '7') - 3*(Astr(3) == '3');

[JP]

Well I havent shown everything...I was just using this as a simpler example for a more complex code Im working on....

[Iain]

Azzi's solution is correct, but it will be easy to get lost in it, and make logical errors.

Answer 3

[Jan]

This case can never happen:

strcmp(Astr([3:6,6:8]), '789123' )

One string has 7 character with a repeated sixth element, while the other string has 6 characters only without a repetition.