Regular Expressions 101

Pro

\ba Unicode word boundary

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-z]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

Positive Lookahead(?=([-\s]?))

Group 1([-\s]?)

Character Class[-\s]?

?matches at most one character from the set below:

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\sa Unicode whitespace character

Non-Capturing Group(?:\1[A-Z][a-z]+)*

*repeats the group contents below any number of times:

\1the text saved by group 1

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-z]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

\ba Unicode word boundary

Negative Lookahead(?!-[A-Z])

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Character Class[A-Z]

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

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

Regular Expression

\b[A-Z][a-z]+(?=([-\s]?))(?:\1[A-Z][a-z]+)*\b(?!-[A-Z])

New

For the First Stage, you should press Start and you should follow Step-One and Step-Three. For the Final Stage, you must follow the sequence of steps One-Two-Five Seven

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Steps One-Two-Five-Seven
One-Two-Five-Seven Steps