我想使用matlab命令提取每个句子中的特殊字符数量和元音数量 [英] I want to pull out the number of special characters and the number of vowels in each sentence using a matlab command

问题描述

我在Matlab中有一个单元格，其中有5个字符串，每个字符串都是一个句子，我想使用Matlab命令提取每个句子中的特殊字符数量和元音数量.我该怎么办?

I have a cell in Matlab with 5 strings in it, each string being a sentence and I want to pull out the number of special characters and the number of vowels in each sentence using a Matlab command. How would I do this?

这是我的代码:

sentences={['Dogs are cool!'];['They love to have their bellies scratched!'];['They     love to run around and play in the grass.'];['Each normal year is equal to seven dog years.'];['Its sad when dogs die.']}
sentences1=length(sentences{1})
sentences2=length(sentences{2})
sentences3=length(sentences{3})
sentences4=length(sentences{4})
sentences5=length(sentences{5})
fprintf('There are %d, %d, %d, %d characters in each sentence respectively. ',     sentences1,sentences2,sentences3,sentences4,sentences5)

推荐答案

如果将特殊字符定义为不是单词字符([a-z_A-Z0-9])而不是空格:

If you define a special character as not a word character ([a-z_A-Z0-9]) and not whitespace:

cellfun(@(x) numel(regexp(x,'[^\w\s]')),sentences)

在您的情况下，每个句子只有一个.如果您只想计算不是单词字符的字符，其中包括空格:

In your case, that is just one per sentence. If you just want to count characters that are not word characters, which includes whitespace:

>> cellfun(@(x) numel(regexp(x,'[^\w]')),sentences)
ans =
     3
     7
    14
     9
     5

元音的情况只是:

 cellfun(@(x) numel(regexpi(x,'[aeiou]')),sentences)

注意，这种情况现在使用regexpi而不是regexp进行忽略，但是您也可以将模式扩展到'[AEIOUaeiou]'并使用常规的regexp.根据您的心情，您还可以选择使用[aeiouy].

Notice this now uses regexpi instead of regexp to ignore, case but you can also expand the pattern to '[AEIOUaeiou]' and use the normal regexp. Depending on your mood, you may also choose to use [aeiouy].

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