regex:numbers:0_and_numbers_not_beginning_with_0
Regex - Numbers - 0 and numbers not beginning with 0
^(0|[1-9][0-9]*)$
regex/numbers/0_and_numbers_not_beginning_with_0.txt · Last modified: 2022/09/20 23:08 by peter
^(0|[1-9][0-9]*)$