Function Counter of digits
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I am new to Matlab and I want to make a function called digit_counter that takes the name of a text file as input and returns the number of digits (i.e., any of the characters, 0-to-9) that the file contains. Any help?
采纳的回答
Assuming only text files, then here is one line to solve your task:
nnz(isstrprop(fileread(...),'digit'))
just replace ... with the filename. If you really want it as a function:
digit_counter = @(name)nnz(isstrprop(fileread(name),'digit'));
and call it like this:
digit_counter('test.txt');
更多回答（1 个）
Azzi Abdelmalek
2016-5-20
编辑：Azzi Abdelmalek
2016-5-20
name='w1o4rd12'
out=numel(regexp(name,'\d+'))
%or
name='w1o4rd12'
a=name-'0'
idx=a>=0 & a<=9
out=nnz(idx)
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