Which regular expression matches "color" and "colour"?
A. col[0-9]+our
B. colo?ur
C. colou?r
D. ]a-z]{7}
Which regular expression matches "color" and "colour"?
Which regular expression matches "color" and "colour"?
A. col[0-9]+our
B. colo?ur
C. colou?r
D. ]a-z]{7}
Correct.
When using the ? it means Match 0 or 1 of the preceding token, effectively making it optional.
Example
colou?r would match color or colour (letter u being optional)