Introduction - If you have any usage issues, please Google them yourself
1. Delete TXT files in the blank lines 2. Delete TXT files in the space 3. Delete TXT files in the TAB key extension, the next version to achieve: a. Statistics txt file total number of rows, each row corresponding to the number of characters b. use a dynamic two-dimensional array stored the information above c. array using a callback function to maintain information d. remove specific string line