Regular Expressions 101

Condition(?(?![A-Z])([^ ]+)|([A-Z][a-z]+))

Uses the first branch if the lookaround matches

Negative Lookahead(?![A-Z])

Character Class[A-Z]

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

If the condition is true, match this branch:([^ ]+)

Group 1([^ ]+)

Negated Character Class[^ ]+

+matches at least one character outside the set below:

the literal (32₁₀ / 40₈ / 20₁₆)

Otherwise, match this branch:([A-Z][a-z]+)

Group 2([A-Z][a-z]+)

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)

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.

Search reference

Regular Expression

(?(?![A-Z])([^ ]+)|([A-Z][a-z]+))

New

Jones Smith 9sfjn Hobbes 23r4tgr9h CSV Csv vVv