sort_demo,exception error

[WangXu18]

in sort _demo.cpp
i find a exception error named std::out_of_range when i run the program.
exactlly,there are something wrong in the heap sort which is about std::vector's using.

[anishsingh935]

hi I want to contribute to this issue can you please explain this bug exactly what is happening

[anishsingh935]

[anishsingh935]

its working fine