Input file "input.txt".
First line: Number of integers: n (n = 1000000).
Second line: n signed 32-bit integers, separated by single spaces.
Output file "output.txt".
First line: Number of integers: n (n = 1000000).
Second line: n signed 32-bit integers were sorted by non decrease and separated by single spaces.
Run program in a Unix-like system.
$ gcc -w -o run creatTest.c -std=c11; ./run$ g++ -w -o2 -o run sort.cpp -std=c++11; ./run