regex partial match for several different groups
- by koral
I need regexp to match string build from several groups (A is any letter, 9 is any digit):
group 1 regex [A-Z]{1,2}[0-9]?
A
A9
AA9
group 2 regex [A-Z]{1,3}[0-9]?
A
AA
AAA
AAA9
group 3 regex [A-Z]{2,3}[0-9]?[A-Z]?
AAA
AA9
AA9A
group 4 regex [0-9]{1,2}[A-Z]{1,2}[0-9]?
9A
9AA
9A9
99A9
Not each group must be present but there must be all in correct order - I mean (digit is group number):
1
12
123
1234
So if there is present group 3 there must me all preceding groups present also.
As there are four groups (can be more), so alternative like
^[A-Z]{1,2}[0-9]{1}|[A-Z]{1,2}[0-9]{1}\s{1}[A-Z]{1}[0-9]?$
is not the best option as it would be complicated and difficult to maintain.
Is there any solution with groups or something?
The order of groups is important.
