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Identify books by joining books with reading_sessions and grouping by book to compute highest and lowest ratings (rating spread), total sessions, and count of extreme ratings (≤2 or ≥4); then filter for ≥5 sessions, at least one ≥4 and one ≤2, and polarization score (extreme_count / total_sessions) ≥ 0.6. Return books with their spread and polarization score ordered by score descending then title descending.
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Leetcode 3642. Find Books with Polarized Opinions
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Source snapshot: Nov 12, 2026
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