Regular Expressions 101

Explanation

Pro

Group 1(([a-zA-Z]+)|([\u4e00-\u9fa5]))

1st Alternative([a-zA-Z]+)

Group 2([a-zA-Z]+)

Character Class[a-zA-Z]+

+matches at least one character 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)

2nd Alternative([\u4e00-\u9fa5])

Group 3([\u4e00-\u9fa5])

Character Class[\u4e00-\u9fa5]

\u4e00-\u9fa5one character from 一 (19968₁₀) to 龥 (40869₁₀)

{0,}the literal (32₁₀ / 40₈ / 20₁₆) , repeated any number of times

\1the text saved by group 1

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.

25 tokens

(([a-zA-Z]+)|([\u4e00-\u9fa5])) {0,}\1

New

the the 
the   the
the question is  that 
And we think that that standard has been met here
这是一个很有意思的问题
你看看
看看
看 看这是啥

the the 
the   the
the question is  that 
And we think that that standard has been met here
这是一个很有意思的问题
你看看
看看
看 看这是啥