读入一个西文文本文件,找出文件中的不同字符,对各个不同字符的出现次数进行统计并输出。注意需要重新设定文本路径-Read the text into a text file with the West to identify the different characters in the document, and the emergence of the different number of characters and output statistics. Attention to the need to re-set the text of the path