This question already has answers here:
Comma Separated Numbers Regex
(6 answers)
Closed 3 years ago.
I have the requirement to restrict a non-required textbox to only numbers (0-9) with a separator of ';'. The pattern is that the groups can be 4 or 5 in length and can repeat n times. Anything less than 4 in a group is invalid. After 4 or 5 I need to check for the existence of a separator character ';'. This pattern can repeat n times. I have tried variations of but this doesn't seem to be working. Something simple to start out like
[0-9]{4,5};+
is invalid as I don't need the separator for only 1 number grouping.
Next I tried
^[0-9]{4,5}|[0-9]{4,4};|[0-9]{5,5};$
but this doesn't work because the existence of four digits like 1111 or five digits 11111 before gives one match before it goes awry example "11111;j" Is there a way in a regex to validate
1111
11111
1111;1111
11111;1111
11111;11111
but catch
111
111;
1111;1
11111;1
abc
in a repeating fashion?
This validate your examples.
^[0-9]{4,5}(;[0-9]{4,5})?$
Try it
It's not clare what you mean by "in a repeating fashion". If you want validate also this
1111;11111;11111;1111;11111
You can use this regex
^[0-9]{4,5}(;[0-9]{4,5})*$
Try it
Related
This question already has answers here:
What special characters must be escaped in regular expressions?
(13 answers)
How do I include negative decimal numbers in this regular expression?
(17 answers)
Closed 2 years ago.
Overall Goal: I would like to be able to capture a positive or negative number that looks something like this: xxx.xxx
I am also using Google Sheets, so I cannot use any lookarounds
Example Criteria:
+123.123 ---> 123.123
+30% ---> 30
+4% ---> 4
-1% ---> -1
0 ---> 0
+12 ---> 12
-3 ---> -3
What I've Tried:
The main regex I've been using is: -?\d+.?\d*. The problem with this one is that it also captures the percent signs, which I do not want. Percent signs seem to be considered part of the number.
I've also tried: -?\d+.?\d+. This one runs to the problem of not capturing single digit numbers.
. matches any character (Google uses RE2). You should escape it.
-?\d+\.?\d*
This question already has answers here:
Regex for Australian phone number validation
(5 answers)
Closed 4 years ago.
The below expression is being used to accept Australian phone numbers.
I need to change the expression as to strictly accept total 10 digits (without spaces) if the number starts with 02/03/04/07/08.
^\({0,1}((0|\+61)\s?(2|4|3|7|8)){0,1}\){0,1}(\ |-){0,1}[0-9]{2}(\ |-){0,1}[0-9]{2}(\ |-){0,1}[0-9]{1}(\ |-){0,1}[0-9]{3}$
It does accept 10 digits if the number is entered like 03 11 11 1 111, but without spaces 8 digit number is accepted too.
You can use the use the following regex with alternation:
^ *(?:0 *[23478](?: *\d){8}|[1-9](?: *\d)*|0 *[01569](?: *\d)*) *$
Demo: https://regex101.com/r/bet7m1/1
This question already has answers here:
Using regular expressions to validate a numeric range
(11 answers)
Closed 4 years ago.
How to write regular expression which accept numbers between 1 to 25000>
I tried like this ^([1-2]?[1-4]?[0-9]{0,3}|25000)$
Here's a regex that will only accept a string with a number between 1 and 25000.
Without proceeding zero's.
^([1-9]\d{0,3}|1\d{4}|2[0-4]\d{3}|25000)$
It basically separates it in 4 ranges
[1-9]\d{0,3} : 1 to 9999
1\d{4} : 10000 to 19999
2[0-4]\d{3} : 20000 to 24999
25000 : 25000
A regex101 test can be found here
To find those numbers as a part of a string, you could replace the start ^ and end $ by a wordboundary \b.
Btw, in most programming languages it's often simpler to just check if it's a number that's in the accepted range. Even in HTML there's an input type for numbers where you can set the minimum and maximum.
Try
^(?!0$)((1\d|2[0-4]|\d)?\d{1,3}|25000)$
First negative lookahead will reject a value of only 0.
The group (1\d|2[1-4]|\d)? means that a 5-digit number with an initial digit of 2 requires it to be followed by a 0-4.
https://regex101.com/r/1DgbBM/4
This question already has answers here:
Regex validation for numbers with comma separator
(3 answers)
Closed 4 years ago.
I have a problem with regex and need your help. I want to check my string is correct or incorrect. First and last is a number, only number and comma after it. No space inside 2 numbers.
Ex:
1,2,3,49,5 this is correct
1,2,3,45, this is incorrect
,12,4,2,67 this is incorrect
1,2 3,4,5,6 this is incorrect
^(?:\d+,)*\d+$
(?:\d+,)* - gets matches like "0," "00," "000," ... or empty
\d+ - gets last number as "0" "00" "000"
Please check below regex to solve your problem.
Regex: ^[0-9]+([0-9,])+[0-9]+$
^[0-9]+ is for start with one or more number
[0-9]+$ is for end with one or more number
([0-9,])+ is for one or more number with comma
Please check the output in Regex101
Update:
Please check the updated regex: ^(\d+,)+\d+$
^(\d+,)+ is for one or more number with comma and this will handle first number with comma
\d+$ is for end with one or more number
Please check the updated output in Regex101
This question already has answers here:
What's a Regex pattern for 3 consecutive digits increasing or decreasing
(3 answers)
Closed 6 years ago.
i would like to ask if it is possible to get a regex to check for subsequent alphabets or numbers in a string such as "abcd" or "1234" 4 characters in succession.
This is for password validation to check if a user is trying to enter a password like "abcd1234"
Thank You
Based on the answer Match increasing/decreasing sequences using regex, this pattern does close. Through programming you still need to get the first capturing group \1 and check whether its size is equal to 4. Here you need to set the multi line mode, to allow $ match the end of line.
This is because this regex is capturing all possible groups, however the groups you want has the length of 4, so it should not be a problem.
(?x)
(
(?:a(?=b|$))?
(?:b(?=c|$))?
(?:c(?=d|$))?
(?:d(?=e|$))?
(?:e(?=f|$))?
(?:f(?=g|$))?
(?:g(?=h|$))?
(?:h(?=i|$))?
(?:i(?=j|$))?
(?:j(?=k|$))?
(?:k(?=l|$))?
(?:l(?=m|$))?
(?:m(?=n|$))?
(?:n(?=o|$))?
(?:o(?=p|$))?
(?:p(?=q|$))?
(?:q(?=r|$))?
(?:r(?=s|$))?
(?:s(?=t|$))?
(?:t(?=u|$))?
(?:u(?=x|$))?
(?:x(?=z|$))?
[a-z]?
|
(?:0(?=1|$))?
(?:1(?=2|$))?
(?:2(?=3|$))?
(?:3(?=4|$))?
(?:4(?=5|$))?
(?:5(?=6|$))?
(?:6(?=7|$))?
(?:7(?=8|$))?
(?:8(?=9|$))?
\d?
)
On this link you can see the live regex: https://regex101.com/r/xxED4s/2