CODEWITHSUNDEEP
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H. Frey
H. Frey

Reputation: 23

Regex for "Characters Numbers"

I need a Regex that matches these Strings:

Test 1
Test 123
Test 1.1 (not required but would be neat)
Test
Test a

But not the following:
Test 1a

I don't know how this pattern should look like that it allows text or whitespace at the end but not if there is a number before.

I tried this one ^.*([0-9])$ (matches only Test 1, but not for example Test or Test a) and this one ^.*[0-9].$ (matches only Test 1a, but not for example Test or Test 1) but they don't match what I need.

Upvotes: 2

Views: 94

Answers (4)

impoetk
impoetk

Reputation: 66

Try with

^\w+\s+((\d+\.\d+)|(\d+)|([^\d^\s]\w+))?\s*$

Upvotes: 1

Alfeu
Alfeu

Reputation: 991

As per your strings in your question (and your comments):

^\w+(\s[a-z]|\s\d+(\.\d+)?)?$

Upvotes: 0

Quinn
Quinn

Reputation: 4504

Another pattern for you to try:

^(Test(?:$|\s(?:\d$|[a-z]$|\d{3}|\d\.\d$)))

LIVE DEMO.

Upvotes: 0

rock321987
rock321987

Reputation: 11032

This is working for all cases you provided

^\w+(\s(\d+(\.\d+)?|[a-z]))?$

Regex Demo

Regex Breakdown

^  #Start of string
 \w+ #Match any characters until next space or end of string
  (\s #Match a whitespace
     (
       \d+  #Match any set of digits
         (\.\d+)? #Digits after decimal(optional)
         |  #Alternation(OR)
       [a-z] #Match any character
     )
  )? #Make it optional
 $ #End of string

If you also want to include capital letters, then you can use

^\w+(\s(\d+(\.\d+)?|[A-Za-z]))?$

Upvotes: 1

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