A word, phrase, constraint, guarantee, or relationship in the Problem Statement or an explicit Constraints section that tells the learner what must be returned, what structure is being inspected, which movements are legal, or when failure is allowed. Constraint evidence is routed to the layer it refines, not inserted as a pipeline stage.
In Target Element, 'Return the index' is a Context Clue for the Answer Space, while 'unsorted array' is a Context Clue for the Problem Space and route.
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Student includes full applied examples, common mistakes, proof translations, code-level usage, and advanced decision checklists.
Understand the Term. Now Apply It.
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