$ ./l5_memory_check rand_double.txt rand
3 1
before append arr, this list size is 10000
after append arr, arr size is 0
before free arr
after free arr
3 1
before append arr, this list size is 10000
after append arr, arr size is 0
before free arr
after free arr
listDst size is 10000

Correct!

Correct!