说明：  全角与半角相互转换，字符串分割，比库函数自带的分割函数好用N倍。用过之后你就会觉得库函数里面的分割字符串简直就是垃圾。
( 之后你就会觉得库函数里面的分割字符串简直就是垃圾。 The full width half angle and string conversion, segmentation, segmentation function function comes with easy to use than N times. Used after you will feel that the library function inside the partition string is simply garbage. )