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Update Linked Stack (#3625)

* update linked_stack

* remove properties

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
D
Du Yuanchao committed
c2b7acdf111337632612e26dfdc2b292ac31ddd2
Parent: 5e64260
Committed by GitHub <noreply@github.com> on 10/23/2020, 4:16:23 PM