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perf: optimize DominatingSetAnalyzer — frontier-based CDS, O(D·deg) validation - #133
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…overage and validation - isDominatingSet: build dominated set from candidate neighborhoods O(D·avg_deg) instead of checking each vertex against all candidates O(V·D) - coverageMap: iterate dominator neighborhoods O(D·avg_deg) instead of iterating all dominators per vertex O(V·D) - connectedDominatingSet: maintain frontier set of CDS-adjacent vertices so connectivity check is O(1) instead of O(|CDS|) per candidate, and candidate search is limited to frontier instead of all vertices
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isDominatingSet
coverageMap
connectedDominatingSet