Java regex for Uk postcodes with spaces -

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this question has answer here:

i'm trying create regex matching following patterns (with , without space):

m1 1aa, m60 1nw, cr2 6xh, dn55 1pt, w1a 1hq , ec1a 1bb

i'm new @ , find hard create functional regex examples above.

searching here , there found regex might work of patterns don't know how add condition "with or without space" each type of postcode.

here regex found on post "^(a-pr-uwyz [0-9][abd-hjlnp-uw-z]{2})"

how add space/no space condition? in order match m11aa or m1 1aa.

you need regex:

^([a-pr-uwyz](([0-9](([0-9]|[a-hjkstuw])?)?)|([a-hk-y][0-9]([0-9]|[abehmnprvwxy])?)) ?[0-9][abd-hjlnp-uw-z]{2})$                                                                                      ^

this space must set optional ? quantifier means 0 or 1 repetition.

see demo


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