Regex Series: 5-Digit Zip Code

Write a regular expression that matches a string if and only if it is a valid zip code.

Examples

"32554" ➞ true

"92 342" ➞ false
// Invalid: contains a whitespace

"9@342" ➞ false
// Invalid: contains a non-numeric character

"923444" ➞ false
// Invalid: length is not 5

Notes

• Zipcodes must be 5 digits long exactly and only contain numbers.
• Not allowed: non-numeric characters or whitespaces.
• This challenge is designed to use Regex only.