Make HeapSort use single stack frame

[steverigney]

Currently the heapsort uses recursion to achieve the bubble-up/bubble-down - as this is tail recursive it could be done inside a loop - and use only one stack frame - preventing potential stack overflow.

I would like to be assigned this if possible.

[1170300115]

Hi,I want to work on this issue,anything else working on it?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

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