使用regexptranslatefunction. Then use the result as a regular expression inregexp。

Create a character vector that contains the characters'\n'。

chr ='The sequence \n generates a new line.'

chr ='序列\ n生成了一个新线路。

创建一个正则表达式'\n'as a sequence of the two consecutive characters'\'和'n'。自从regexpfunction interprets'\n'as a newline character, useregexptranslateto create a regular expression to escape'\n'。

pattern = regexptranslate('逃脱','\n')

pattern = '\\n'

找到的起始索引'\n'inchr。阻止regexpfrom interpreting'\n'作为新线，使用patternas the regular expression.

idx = Regexp（Chr，模式）

IDX = 14

Callregexpwithout escaping'\n'。Sinceregexpinterprets'\n'as a newline, it does not find the literal characters inchr。这regexpfunction returns an empty array when it does not find a match.

idx = regexp(chr,'\n')

idx = []

Create a string. Starting in R2017a, you can create strings using double quotes instead of thestringfunction.

str ="Put your money in."

str = "Put your money in."

指定文本，'$ 0.02', as the text to replace the word'money'。To escape the'$'和'.'characters, useregexptranslate。

r = regexptranslate('逃脱','$ 0.02')

r = '\$0\.02'

Replace'money'使用regexprepfunction.

newStr = regexprep(str,'money',r)

newStr = "Put your $0.02 in."

创建一个包含文件名的字符串数组。然后仅查找以结尾的文件名'.mat'。

str = ["test1.mat","myfile.mat","my-matlab-script.m",。。。"jan30.mat","table3.xls"]

str =1x5 string arrayColumns 1 through 4 "test1.mat" "myfile.mat" "my-matlab-script.m" "jan30.mat" Column 5 "table3.xls"

要与正则表达式匹配字符串，请指定'*。垫'as the regular expression. Then translate the wildcard character,'*', using theregexptranslatefunction.

pattern = regexptranslate('wildcard','*。垫')

模式='。*\。垫'

Find matching elements instr使用由pattern。

matches = regexp(str,pattern)

matches =1x5 cell array{[1]} {[1]} {0x0 double} {[1]} {0x0 double}

Create a logical array,TF, that contains1where corresponding elements ofstrmatchedpattern。这n index intostrusingTF显示以结尾的文件名'.mat'。

tf = ~cellfun('isempty',matches); newStr = str(tf)

newStr =1x3 string array"test1.mat" "myfile.mat" "jan30.mat"

创建一个字符向量，其中包含由空格字符（例如空格和新线字符）分开的单词。

chr ='Whose woods these are I think I know.'; chr = [chr newline'His house is in the village though']

chr = 'Whose woods these are I think I know. His house is in the village though'

Specify'\ s'作为与空格字符匹配的正则表达式。然后更换这些字符chr。

expression ='\ s'; newChr = regexptranslate('flexible',chr,expression)

newchr ='谁的\ swoods \ sthese \ sare \ si \ sthink \ si \ sknow。