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发表于 2010-5-11 13:19:52
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用list吧- W2 q5 [4 p! Q$ \
patches-own [wealth rank]
% v6 Y( l1 ~& \1 g2 f0 wto setup
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ask patches [set wealth random 100 set pcolor green ]; b5 K- d: V! e
end
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3 @$ L+ [. P) h+ e- n7 c) u* yto go
& Y6 D7 Y1 u% A; t let mylist1 []6 e7 F* c# p4 \ J! ?
set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
! n/ `. B J' s( v0 _1 v let mylist2 []
, O( k* M. n* o3 P2 X" U. a set mylist2 n-values count patches [? + 1]
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( foreach mylist1 mylist2
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, v7 [* ~; d6 V& A- R/ U; }8 @ ask ?1[ set rank ?2]
3 {, C1 O$ F5 |- X show [rank] of ?1
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let mylist3 []
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2 k8 k7 w: X' x) k set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches8 n1 x9 W. L/ K# ]" C+ C$ v
show count patches
) z1 D; R3 `; U: Y* X9 F" j- [ show mylist1
6 C0 p( S$ ]- c; J% L: A, w show mylist3
$ B; p3 f; ^. \2 D+ A' L% }end
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# D% l! {6 u( u& j0 ^, v, |6 F这时的mylist1 和mylist3 应该是一样的 |
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