Regular Expressions 101

1st Alternative(0\.5)

Group 1(0\.5)

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

2nd Alternative(\.5)

Group 2(\.5)

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

3rd Alternative([0-9]*?)\.5((?(1)| ))

Group 3([0-9]*?)

Character Class[0-9]*?

*?matches any number of characters from the set below:

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

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

5the literal 5 (53₁₀ / 65₈ / 35₁₆)

Group 4((?(1)| ))

Condition(?(1)| )

Uses the first branch if group 1 matched

If the condition is true, match this branch: — matches an empty string

Otherwise, match this branch:

the literal (32₁₀ / 40₈ / 20₁₆)

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

(0\.5)|(\.5)|([0-9]*?)\.5((?(1)| ))

New

skdsd .5 cups

skdsd .5 cups