What are other regex examples?

Here are some common regex examples along with their explanations:

1. ^ (Start of a string):

   • Regex: ^Hello
   • Matches: Hello world, but not Say Hello.

2. $ (End of a string):

   • Regex: world$
   • Matches: Hello world, but not world is big.

3. . (Matches any single character):

   • Regex: a.b
   • Matches: aab, acb, but not ab (because it requires one character between a and b).

4. * (Matches zero or more of the preceding element):

   • Regex: a*
   • Matches: ``, a, aa, aaa, but not b.

5. + (Matches one or more of the preceding element):

   • Regex: a+
   • Matches: a, aa, aaa, but not b or ``.

6. {n} (Matches exactly n occurrences):

   • Regex: a{3}
   • Matches: aaa, but not aa or aaaa.

7. {n,} (Matches n or more occurrences):

   • Regex: a{2,}
   • Matches: aa, aaa, aaaa, but not a.

8. {n,m} (Matches between n and m occurrences):

   • Regex: a{2,4}
   • Matches: aa, aaa, aaaa, but not a or aaaaa.

9. | (Logical OR):

   • Regex: cat|dog
   • Matches: cat or dog, but not fish.

10. [a-z] (Matches any lowercase letter):

    • Regex: [a-z]
    • Matches: a, b, c, ..., z.

11. \d (Matches any digit):

    • Regex: \d
    • Matches: 0, 1, 2, ..., 9.

12. \w (Matches any word character):

    • Regex: \w
    • Matches: any letter, digit, or underscore.

13. \s (Matches any whitespace character):

    • Regex: \s
    • Matches: space, tab, newline.

These examples cover a range of common regex patterns. If you have specific use cases or need further examples, let me know!