DATA-STRUCTURES-BASICS5 MIN READ
Turn hierarchy talk into tree invariants
Translate hierarchy requirements into tree constraints and traversal needs.
Lena L Product manager 01 Shape 02 Invariant 03 Traversal Product request 30 sec Scenario Lena wants nested knowledge-base folders. The import source may contain parent references that accidentally loop. Without tree invariants, a folder UI can become a graph bug. Framework 1 min Tree contract Root -> Parent -> Acyclic -> Traversal
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