regex101: Password mask

Pro

^start of line

1st Alternative[A-Za-z]+(\d[A-Za-z\d]*([^A-Za-z\d].*\S|[^A-Za-z0-9 ])|[^A-Za-z\d][^\d]*(\d.*\S|\d))

Character Class[A-Za-z]+

+matches at least one character from the set below:

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

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

Group 2(\d[A-Za-z\d]*([^A-Za-z\d].*\S|[^A-Za-z0-9 ])|[^A-Za-z\d][^\d]*(\d.*\S|\d))

1st Alternative\d[A-Za-z\d]*([^A-Za-z\d].*\S|[^A-Za-z0-9 ])

\da digit

Character Class[A-Za-z\d]*

*matches any number of characters from the set below:

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

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

\da digit

Group 3([^A-Za-z\d].*\S|[^A-Za-z0-9 ])

1st Alternative[^A-Za-z\d].*\S

Negated Character Class[^A-Za-z\d]

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

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

\da digit

.*any character (except for line terminators), repeated any number of times

\Sany non-whitespace character

2nd Alternative[^A-Za-z0-9 ]

Negated Character Class[^A-Za-z0-9 ]

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

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

0-9one character from 0 (48₁₀) to 9 (57₁₀)

the literal (32₁₀ / 40₈ / 20₁₆)

2nd Alternative[^A-Za-z\d][^\d]*(\d.*\S|\d)

Negated Character Class[^A-Za-z\d]

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

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

\da digit

Negated Character Class[^\d]*

*matches any number of characters outside the set below:

\da digit

Group 4(\d.*\S|\d)

1st Alternative\d.*\S

\da digit

.*any character (except for line terminators), repeated any number of times

\Sany non-whitespace character

2nd Alternative\d

\da digit

2nd Alternative\d+([A-Za-z][A-Za-z\d]*([^A-Za-z\d].*\S|[^A-Za-z\s\d])|[^A-Za-z\d][^A-Za-z]*([A-Za-z].*\S|[A-Za-z]))

\d+a digit, repeated at least once

Group 5([A-Za-z][A-Za-z\d]*([^A-Za-z\d].*\S|[^A-Za-z\s\d])|[^A-Za-z\d][^A-Za-z]*([A-Za-z].*\S|[A-Za-z]))

1st Alternative[A-Za-z][A-Za-z\d]*([^A-Za-z\d].*\S|[^A-Za-z\s\d])

Character Class[A-Za-z]

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

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

Character Class[A-Za-z\d]*

*matches any number of characters from the set below:

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

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

\da digit

Group 6([^A-Za-z\d].*\S|[^A-Za-z\s\d])

1st Alternative[^A-Za-z\d].*\S

Negated Character Class[^A-Za-z\d]

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

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

\da digit

.*any character (except for line terminators), repeated any number of times

\Sany non-whitespace character

2nd Alternative[^A-Za-z\s\d]

2nd Alternative[^A-Za-z\d][^A-Za-z]*([A-Za-z].*\S|[A-Za-z])

3rd Alternative[^A-Za-z\d\s][^A-Za-z\d]*([A-Za-z][^\d]*(\d.*\S|\d)|\d[^A-Za-z]*([A-Za-z].*\S|[A-Za-z]))

$end of line

Global pattern flags

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

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

26 tokens

Regular Expression

^([A-Za-z]+(\d[A-Za-z\d]*([^A-Za-z\d].*\S|[^A-Za-z0-9 ])|[^A-Za-z\d][^\d]*(\d.*\S|\d))|\d+([A-Za-z][A-Za-z\d]*([^A-Za-z\d].*\S|[^A-Za-z\s\d])|[^A-Za-z\d][^A-Za-z]*([A-Za-z].*\S|[A-Za-z]))|[^A-Za-z\d\s][^A-Za-z\d]*([A-Za-z][^\d]*(\d.*\S|\d)|\d[^A-Za-z]*([A-Za-z].*\S|[A-Za-z])))$

Regular Expressions 101

Regular Expression

Unit Tests