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Heaps algorithm iterative (#2505)

* heap's algorithm iterative

* doctest

* doctest

* rebuild
G
Guillaume Rochedix committed
04322e67e5d3754f7be6525c0e078a955237067a
Parent: 9016fe1
Committed by GitHub <noreply@github.com> on 9/29/2020, 10:38:12 AM