1. Use the regular expression replacement function of notepad++
000102030405060708090a0b0c0d0e0ff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff
Regular search string ([0-9a-fA-F]{2}), replacement string 0x\1, result:
0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff,
Reverse replacement, search string 0x([0-9a-fA-F]{2}), replace string \1, result:
000102030405060708090a0b0c0d0e0ff0f1f2f3f4f5f6f7f8f9fafbfcfdfeff
2. Use the macro function of notepad++
1) Click the beginning of the string, click "Macro" -> "Start Recording",
2) Enter "0x", move the cursor two digits to the right, enter ",", and click "Macro" -> "Stop Recording".
3) Click "Macro" -> "Run Macro Repeatedly", enter 31 times to run.