Regular Expressions 101

Explanation
Pro

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

\d+a digit, repeated at least once

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

*repeats the group contents below any number of times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\sany whitespace character

Group 2(\d+(?:\.\d+)*)

\d+a digit, repeated at least once

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

*repeats the group contents below any number of times:

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

\d+a digit, repeated at least once

\s*any whitespace character, repeated any number of times

Group 3([\+\-\*\/])

Character Class[\+\-\*\/]

\+the literal + (43₁₀ / 53₈ / 2B₁₆)

\-the literal - (45₁₀ / 55₈ / 2D₁₆)

\*the literal * (42₁₀ / 52₈ / 2A₁₆)

\/the literal / (47₁₀ / 57₈ / 2F₁₆)

Global pattern flags

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

Detailed match information will be displayed here automatically.

25 tokens

(\d+(?:\.\d+)*)\s(\d+(?:\.\d+)*)\s*([\+\-\*\/])

New

10 9 -
89 0 9 +

98 7 6 4 *

29 0-

5 - 

6.7 9 /

938.1 3.4 -

2 83.3 9172 38.4 -

10 9 -
89 0 9 +

98 7 6 4 *

29 0-

5 - 

6.7 9 /

938.1 3.4 -

2 83.3 9172 38.4 -