Regex Patterns  Every Programmer Should Master

10

Write a function to check if a sentence contains words with duplicate letters.

1

Validating Email Addresses

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2

Validating URLs

Verifies if a URL is properly formatted with optional HTTP(S), domain, and path.

Learn basic to advanced Regex commands with  Regex cheat sheet!

3

Validating Dates in YYYY-MM-DD Format

Checks if a date follows the YYYY-MM-DD format.

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4

Validates US phone numbers with optional area code and dashes.

Validating Phone Numbers (US Format)

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5

Validating Credit Card Numbers (Luhn Algorithm)

Verifies credit card numbers' basic validity using the Luhn algorithm.

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6

Validating Social Security Numbers (SSN)

Ensures US Social Security Numbers are in the standard format.

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7

Identifies HTML tags within text or HTML code.

Matching HTML Tags

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8

Matching Twitter Handles

Finds Twitter handles (usernames) prefixed with '@' in text.

Learn basic to advanced Regex commands with  Regex cheat sheet!

9

Matching Hashtags

Locates hashtags within text, often used for social media analysis.

Learn basic to advanced Regex commands with  Regex cheat sheet!

10

Extracts all URLs (HTTP/HTTPS) from a given text or document.

Extracting All URLs from a String

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