I would like to create a regex that will validate that a string is an equation made up of a single digits and either the *
or +
operator and is no longer than 100 characters. So these would be valid:
1+2*3*8+0
9
9*9
And these would not be valid:
1++1
12+1
2*25
1+
47
+
+1
11
I came up with the regex below to accomplish this:
^(\d{1}[\+\*]{1}){0,99}\d$
Which appears to work, but I'm curious if there is a cleaner way to accomplish this. Any suggestions or is this about as clean as it gets?
It is saved here if you would like to play with it.