Encoding method of UTF-8

UTF Encoding the UTF-8 is 8-bit to encode the UCS. The encoding method from UCS-2 to UTF-8 is as follows: UCS-2 coding (hexadecimal) the UTF-8 byte stream (Binary) 0000-007f 0 xxxxxxx 0080-07ff 110 XXXXX 10 xxxxxx 0800-FFFF 1110 XXXX 10 xxxxxx 10 xxxxxx for example, the Unicode code of the Chinese character is 6c49. 6c49 is between 0800-ffff, so it must use a 3-byte template: 1110 XXXX 10 xxxxxx 10 xxxxxx. Write 6c49 as binary: 0110 110001 001001. Use this bit stream to replace X in the template. The result is 11100110 10110001 10001001, that is, E6 B1 89. the UTF-16 is coded in 16 bits. The UTF-16 code is equal to the 16-bit unsigned integer corresponding to the UCS code for a UCS code that is less than 0x10000. A algorithm is defined for the UCS code not less than 0x10000. However, because the actual use of ucs2, or ucs4 BMP must be less than 0x10000, so for now, it can be considered that the UTF-16 and UCS-2 are basically the same.