string as input for function

Question

Espen 2011-11-7

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/20528-string-as-input-for-function

this function handles a string as input:

function rev=stringrev(a)
n=length(a);
for i=1:n
      b(i)=a(n-i+1);
end
rev=b;

but this does not:

function palindrom=checkpalin(a)
rev=stringrev(a);
      if strcmp(rev,a)
         palindrom=sprintf('%s is a palindrom', rev)
      else
          palindrom=sprintf('%s is not a palindrom', rev)
      end

what is the difference?

This is what happens when I run them in matlab:

>> b='astsa'
b =
astsa
>> checkpalin(b)
??? Undefined function or method 'checkpalin' for input arguments of type 'char'.
>> a='iceice'
a =
iceice
>> stringrev(a)
ans =
ecieci
>>