Filter words in English articles

This is an English string

<code>When I was young,my uncle king of the jungle,one day he call me,and say we walk to the river,i asked why?
my uncle say, you must learn how to cherish the water.</code>

I want to write a regular expression that will work as long as that word
This is what I wrote.

<code>[^a-zA-Z]young[^a-zA-Z]</code>

But I can’t find the first word of the article

Online Regular Expressions

Reply content:

This is an English string

<code>When I was young,my uncle king of the jungle,one day he call me,and say we walk to the river,i asked why?
my uncle say, you must learn how to cherish the water.</code>

I want to write a regular expression that will work as long as that word
This is what I wrote.

<code>[^a-zA-Z]young[^a-zA-Z]</code>

But I can’t find the first word of the article

Online Regular Expressions

[^a-zA-Z] Change it to [^a-zA-Z]? That’s it

<code>(^|[^a-zA-Z])you([^a-zA-Z]|$)
</code>

(^|[^a-zA-Z])When([^a-zA-Z]|$) I think this is ok, considering the first word and the last word, actually I I think the easiest way is to add a space or other special character to the head and tail of the string, so that your original regular expression can be successfully matched.

[^a-zA-Z]This pattern matches a character that is not "a to z or A to Z". There is no character in front of When, so naturally it cannot be matched. Other matched words also match a space.

If you don’t want spaces, you can actually use the escape character b to match word boundaries. This escape character can match the beginning, end, and word boundaries formed by spaces and punctuation. It will not match any extra characters.

bWhenb That’s it.