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Last active October 28, 2016 09:48
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Sample Regular Expressions
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regex.md

Whole Numbers

Regex to validate all whole numbers only i..e, [0, 1, 2, 3, ....].

(0|[1-9][0-9]*)

Natural Numbers

Regex to validate all natural (psoitive whole) numbers i..e, [1, 2, 3, ....] sometimes 0 as well.

including zero (0): (0|[1-9][0-9]*)

excluding zero (0): ([1-9][0-9]*)

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