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发表于 2010-5-11 13:19:52
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用list吧6 a' g( P' M8 Z
patches-own [wealth rank]1 G% u/ L6 d; C5 v" z
to setup% b% N- x# K6 ?2 h; w- B8 Y
ca
4 C$ e# g( j/ P2 P0 \( c3 C5 D ask patches [set wealth random 100 set pcolor green ]+ h: @! y1 ?/ `* H9 T* X2 C
end
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to go
/ T- x3 S, A6 M+ j- u$ ] let mylist1 []
, y7 {- b3 w2 g! ]# I set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches8 [# e+ S+ V; F( C1 d
let mylist2 []
/ E$ o- Q, u2 g, f$ e set mylist2 n-values count patches [? + 1]" }7 v- f, W& I+ N$ ?4 h
) e" z) `5 T) t, R, D1 L5 ?& i ( foreach mylist1 mylist2$ F% V% E" Y& u4 k5 N; M
[
8 y& b9 z0 H# M3 r( Y" | ask ?1[ set rank ?2]
/ R9 l. e) ]1 o2 r5 {# @6 {* V show [rank] of ?19 c4 _# R& u! d" M: t
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)
% `% P$ f% \+ d6 h6 G {* b let mylist3 []
) {% w# S( }" @ j 4 n$ k- ~. s) N
set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches
% c9 d, E) x% X# r' l7 @ show count patches& M* g3 i+ C9 w w: s3 i( [% o! `
show mylist1 8 G) k3 o2 V& u, [0 C: n
show mylist3
* e! \6 v [4 fend
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这时的mylist1 和mylist3 应该是一样的 |
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