testTaskMergeSort

Java version 1.8.0_351 Usage:
All files should be placed in a single directory. Use command line in this directory and type:
javac Main.java
java Main [-sorting_mode] [-options] [output_file] [input_files]

1. sorting_mode

• -s for sorting strings
• -i for sorting integers

2. options

• -a for sorting in ascending order
• -d for sorting in descending order

3. output_file

• Relative path to the .txt file, which content will be removed in case of it's existance

4. input_files

• Array of relative paths to the .txt files, that must exist and contain data that fits the sorting mode