What method can be used to confirm that a string concludes with precisely three digits?
accepted examples:
Hey-12-Therexx-111
001
xxx-5x444
rejected examples:
Hey-12-Therexx-1111
Hey-12-Therexx-11
Hey-12-Therexx
12
112x
What method can be used to confirm that a string concludes with precisely three digits?
accepted examples:
Hey-12-Therexx-111
001
xxx-5x444
rejected examples:
Hey-12-Therexx-1111
Hey-12-Therexx-11
Hey-12-Therexx
12
112x
One way to express this is:
/(\A|\W)\d{3}$/
This regular expression signifies, "start of the string or a non-digit character, followed by three digits at the end of the string".
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