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发表于 2010-5-11 13:19:52
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用list吧( B) h4 p" T( D' ]7 i+ x5 D+ n
patches-own [wealth rank]- w& X9 U4 i8 M' \
to setup
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ask patches [set wealth random 100 set pcolor green ]2 a3 h% N+ E9 i) Y* x
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to go
7 k3 A6 g# l6 @ let mylist1 []
8 Q I A5 ], i- r set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
/ A% A; r' D& B let mylist2 []
# N, y3 |# A% K# A! K" J v- W5 Y# Q set mylist2 n-values count patches [? + 1]. L& h/ H: z( @' V! b( g7 L
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( foreach mylist1 mylist2
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* C5 m: B6 c- @- ^: q0 F ask ?1[ set rank ?2]: N3 Y3 B& {0 l- |6 F
show [rank] of ?1
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- T3 y' J. C! x2 `. t4 r2 I9 ^; n let mylist3 []& ^/ z, P1 w+ o, e3 t! c$ u; e
% \7 F8 ^" W$ G8 u: Z2 v set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches
+ }- r) E0 t8 @4 C& P' x+ l2 y show count patches
0 @% d! B0 g, S0 Q/ m$ | show mylist1 0 W" t* m* t7 l5 }. e' M
show mylist3
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) C3 r' `$ \0 E0 U) l$ ~2 X2 i- j这时的mylist1 和mylist3 应该是一样的 |
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