Chinese character positive-negative sequence dual-radical categorizing and searching method and pinyin touch-typing intelligent input method

The invention discloses a Chinese character positive-negative sequence dual-radical quick determining, categorizing and searching method, a pinyin intelligent input method, and a method for looking up codes according to positive-negative sequence shape-codes and strokes of Chinese character, wherein the pinyin intelligent input method is based on the Chinese character positive-negative sequence dual-radical quick determining, radical classifying and searching method, is used for transcoding some Chinese characters according to certain rule while inputting tens of thousands of Chinese characters of kinds of character sets, is universal to a general keyboard for all-key input without repeated code and to a 12-key keypad for displaying 6 characters at most in the all-key input without page turning. According to the positive and negative radical lists provided by the methods, a positive sequence radical and a negative sequence radical are respectively taken from a top left corner and a lower right corner of each