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Add min-st-kruskal.

master
Sergiu Ivanov 10 months ago
parent
commit
40059d1b75
  1. 16
      graph.rkt

16
graph.rkt

@ -37,6 +37,8 @@
dfs dfs/generalized
dag? tsort cc cc/bfs scc
min-st-kruskal
graphviz)
;; Wrap the opaque graph structure coming from the generic
@ -182,6 +184,10 @@
(define (scc g)
(g:scc (gg g)))
;; 5 Spanning Trees
(define (min-st-kruskal g)
(g:min-st-kruskal (gg g)))
;; 10 Graphviz
(define (graphviz g #:output [output #f] #:colors [colors #f])
(g:graphviz (gg g) #:output output #:colors colors)))
@ -267,6 +273,9 @@
[cc/bfs (-> Graph (Listof (Listof Any)))]
[scc (-> Graph (Listof (Listof Any)))]
;; 5 Spanning Trees
[min-st-kruskal (-> Graph (Listof (List Any Any)))]
;; 10 Graphviz
[graphviz (->* (Graph)
(#:output Output-Port
@ -377,6 +386,13 @@
(check-equal? (scc (directed-graph '((a b) (b c) (c a) (c d) (e a))))
'((e) (c b a) (d))))
;; 5 Spanning Trees
(test-case "5 Spanning Trees"
(define g0 (weighted-graph/undirected '((1 a b) (2 b c) (3 c a) (4 c d) (5 e a))))
(check-equal? (min-st-kruskal g0)
'((a e) (c d) (c b) (a b))))
(test-case "10 Graphviz"
(define g (directed-graph '((a b) (b c))))
(check-equal? (graphviz g)

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