Commonly used Unicode value range value range Unicode

Characters: [0x4e00,0x9fa5](or decimal [19968,40869])
number: [0x30,0x39](or decimal [48, 57])
lowercase letters: [0x61,0x7a](or decimal [97, 122])
uppercase: [0x41,0x5a](or decimal [65, 90])

 

reference:

1) conventional Unicode range

Characters: [0x4e00,0x9fa5](or decimal [19968,40869])
number: [0x30,0x39](or decimal [48, 57])
lowercase letters: [0x61,0x7a](or decimal [97, 122])
uppercase: [0x41,0x5a](or decimal [65, 90])

 

reference:

1) conventional Unicode range