Regular Expressions 101

^start of line

Character Class[a-zA-Z]

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

Character Class[a-zA-Z=0-9;]*

*matches any number of characters from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case sensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case sensitive)

=the literal = (61₁₀ / 75₈ / 3D₁₆)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

^[a-zA-Z][a-zA-Z=0-9;]*

New

3. 宿舍开水一壶价格已达到1元以上，%给学生用水造成很大负担。
4. 空调租赁机制不合理问题，%租赁只能以年为单位，但学生一般只在夏季使用，多出费用很多
5. 厕所洗手液没有%及时更换
matlab=123;%this is a matlab test function
Matlab=123;%this is a matlab test function