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fix bug in min-cut caused by mutation from sort #15

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fix bug in min-cut caused by mutation from sort #15

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2 changes: 1 addition & 1 deletion graph.lisp
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Original file line number Diff line number Diff line change
Expand Up @@ -1275,7 +1275,7 @@ through to guide the A* search used in `shortest-path'.")
(rest (remove (car a) (nodes g))))
(loop :while rest :do
;; grow A by adding the node most tightly connected to A
(let ((new (car (sort rest #'> :key {connection-weight a}))))
(let ((new (extremum rest #'> :key {connection-weight a})))
(setf rest (remove new rest))
(push new a)))
;; store the cut-of-phase
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