Jaccard index: Difference between revisions

→‎{{header|BQN}}: Use sum instead of count to get sizes
(Add BQN)
(→‎{{header|BQN}}: Use sum instead of count to get sizes)
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=={{header|BQN}}==
<lang bqn>Jaccard ← ≡◶⟨≡◶⟨∊ ÷○(≠(∊/⊣))÷(≠(⍷∾)) ∊∘∾,1˙⟩ 1⟩
 
a ← ⟨⟩
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