regex101: PCRE (Legacy) Substitution Workspace

Pro

1st Alternative((?:\d+(?:\.\d+)?)\/(?:\d+(?:\.\d+)?))

Group 1((?:\d+(?:\.\d+)?)\/(?:\d+(?:\.\d+)?))

Non-Capturing Group(?:\d+(?:\.\d+)?)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Non-Capturing Group(?:\d+(?:\.\d+)?)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

2nd Alternative((?:[+-]?\d+(?:\.\d+)?)?[+-]?(?:\d+(?:\.\d+)?)?i)

Group 2((?:[+-]?\d+(?:\.\d+)?)?[+-]?(?:\d+(?:\.\d+)?)?i)

Non-Capturing Group(?:[+-]?\d+(?:\.\d+)?)?

?repeats the group contents below at most once:

Character Class[+-]?

?matches at most one character from the set below:

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Character Class[+-]?

?matches at most one character from the set below:

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Non-Capturing Group(?:\d+(?:\.\d+)?)?

?repeats the group contents below at most once:

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

ithe literal i (105₁₀ / 151₈ / 69₁₆) (case sensitive)

3rd Alternative([+-]?\d+(?:\.\d+)?)

Group 3([+-]?\d+(?:\.\d+)?)

Character Class[+-]?

?matches at most one character from the set below:

+the literal + (43₁₀ / 53₈ / 2B₁₆)

-the literal - (45₁₀ / 55₈ / 2D₁₆)

\d+a digit, repeated at least once

Non-Capturing Group(?:\.\d+)?

?repeats the group contents below at most once:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

Global pattern flags

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

25 tokens

Regular Expression

((?:\d+(?:\.\d+)?)\/(?:\d+(?:\.\d+)?))|((?:[+-]?\d+(?:\.\d+)?)?[+-]?(?:\d+(?:\.\d+)?)?i)|([+-]?\d+(?:\.\d+)?)

New

-1 2/5 -0.4 1+3i -i 3i +2i -2i +3 -1+i -1-i +59i

Substitution

\n

-1 2/5 -0.4 1+3i -i 3i +2i -2i +3 -1+i -1-i +59i