Matlab學習筆記（3）——Matlab數據結構

本節主要是熟悉matlab字符數組的有關內置函數與技巧

字符數組有關操作：

A='Today is Saturday.';
B='I want go home.';
size(A)
size(B)
AB=strcat(A,B)
ab=strvcat(A,B)
size(ab)
double(ab)




>> XXBJ3_19
ans =

     1    18


ans =

     1    15


AB =

Today is Saturday.I want go home.


ab =

Today is Saturday.
I want go home.   


ans =

     2    18


ans =

    84   111   100    97   121    32   105   115    32    83    97   116   117   114   100    97   121    46
    73    32   119    97   110   116    32   103   111    32   104   111   109   101    46    32    32    32

字符串搜索

>> s='Find the starting indices of the shorter string.';
>> k=findstr(s,'the')

k =

     6    30

>> k=findstr(s,'student')

k =

     []

>> k=findstr('the',s)

k =

     6    30

字符串替換

>> S1='The area is at least 400 square meters';
>> newarea=strrep(S1,'400','1000')

newarea =

The area is at least 1000 square meters

ASCII碼應用

>> ASCII=char(reshape(32:127,32,3)')

ASCII =

 !"#$%&'()*+,-./0123456789:;<=>?
@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
`abcdefghijklmnopqrstuvwxyz{|}~