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发表于 2010-5-11 13:19:52
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用list吧7 r3 p# \; i7 {, r3 D, N
patches-own [wealth rank]8 ~! _6 u5 }5 C, @% A
to setup
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: {0 b8 z3 q4 ? M ask patches [set wealth random 100 set pcolor green ]! C' I! U! f! J. l5 ]
end& A7 A$ x5 U. V# h
. X6 G' J) e4 U( ~4 J: Uto go# R' V( K( B( u0 e9 y: h
let mylist1 []
. M0 S& M: b Q set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
3 N# T5 m2 o2 {) h let mylist2 []% M0 e6 @, p; b- a2 p, C
set mylist2 n-values count patches [? + 1]. I. j. t" Q6 L7 @
9 f! k, ^) o% G; w% `+ P* Z ( foreach mylist1 mylist2- J2 k4 Z8 }# p3 h# P/ S. d; q5 ]! n
[% q( L# Z+ Z4 w- |* G1 \
ask ?1[ set rank ?2]' `; O9 O' S y( @
show [rank] of ?14 V) q ]$ S& f) M
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let mylist3 []) N- l7 M: [. z! f: \: }& Q" H
' }6 g% p M) C set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches2 h0 e0 D8 `, i) W5 ^. O* l
show count patches
! r% n8 E+ }9 a% s/ b* I7 O6 V4 m- b show mylist1
6 Q3 J2 z+ F& ^. h show mylist37 L0 ?4 w1 Q4 j1 a8 _
end" L7 q# s# `; H# t3 p) z. }6 o
2 A8 Q* K# c$ M" B" A, [这时的mylist1 和mylist3 应该是一样的 |
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