Regular expressions: number that does not begin or end with a letter

Question

L_Del 2019-6-13

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回答： L_Del 2019-6-13

Hi

This is my first post here.

I'm trying to read a file that has strings like this one c0, ("cee zero comma") but it has other strings like 117. So I need to create a regular expression that only selects numbers that don't have any non numbers in front of them. Makes sense?

How can I select only the 0?

I have tried ^(?![\D][0-9]+ without success. I know this doesn't do anything at the end.

In simpler terms, what I'm trying to achieve is this: use regexp to only select decimal numbers and integers (but the interger part should not select integers that are in the decimal number...) .

Here is one of the lines I'm working on: d="M117.125,310.375c0,-77.729,80.738,-140.625,180.515,-140.625" />

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Answer 1

Debasish Samal 2019-6-13

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编辑：Debasish Samal 2019-6-13

在 MATLAB Online 中打开

Here is a solution to your answer. This solution separates all the decimal numbers/integers from the non integers/decimals.

str = "M117.125,310.375c0,-77.729,80.738,-140.625,180.515,-140.625" ;
exp1 = ',';
splitStr = regexp(str,exp1,"split");
exp3 = '[^0-9.,-]'
splitStr = regexprep(splitStr,exp3,'')