正則表達式Hex Chars

Question

如何才能找到正則表達式（0-9，a-f）和（m，n，o，k）的十六進制字符？

Answer 1

使用以下正則表達式：

[0-9a-fA-FmnokMNOK] 

說明：

[     #Match a single character present in the group (look below) 
0-9     #All numbers from 0 to 9 
    a-fA-F   #Characters from a to f (lowercase and uppercase) 
      mnokMNOK #The characters m, n, o and k (lowercase and uppercase) 
        ] #End of character group 

這裏試試：https://regex101.com/r/jT1iY3/3 - 這也是它向你解釋右側立柱。