Regular Expressions 101

Explanation

Pro

^start of line

Non-Capturing Group(?:\d{1,3}\h+)?

?repeats the group contents below at most once:

\d{1,3}a digit, repeated between 1 and 3 times

\h+any horizontal whitespace character, repeated at least once

\Dany character that's not a digit

\S*any non-whitespace character, repeated any number of times

Non-Capturing Group(?:\h+\S+){0,3}

{0,3}repeats the group contents below between 0 and 3 times:

\h+any horizontal whitespace character, repeated at least once

\S+any non-whitespace character, repeated at least once

$end of line

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

^(?:\d{1,3}\h+)?\D\S*(?:\h+\S+){0,3}$

New

School
This is a School
1 This is a School
145 Is this a School
1450 Is this a School
This is Govt Hight School
123