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发表于 2010-5-11 13:19:52
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用list吧" j1 k% i" y( P. Y" p9 H( a
patches-own [wealth rank]* _8 x. j% T. t( H* Y% l3 D3 I N
to setup
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ask patches [set wealth random 100 set pcolor green ]
5 t. k( v7 k; Uend
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" h7 j. I5 k9 a9 {$ w) v; L/ |' _0 Vto go
5 ~" Q$ I2 P, y3 Y9 G let mylist1 []. w3 F3 M9 B; r4 C; G: v
set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
3 X5 v: z5 n8 N2 q let mylist2 []
! y$ F% U2 z( n set mylist2 n-values count patches [? + 1]. V9 Y* I" \9 v9 \
4 N, O5 y/ V: c0 B+ F, y( \& g! r ( foreach mylist1 mylist2
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ask ?1[ set rank ?2]7 T' R! c; p: c2 G: L# `6 z2 a
show [rank] of ?1
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) t3 e: M6 C8 @6 o* p* j ]
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let mylist3 [], ~+ j1 T# G7 D
5 i' K# w5 e" c9 ^9 } set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches" E$ G. I7 i" A
show count patches% P* K6 P2 R& ~9 {7 B
show mylist1 * @3 g* Y( t+ k# y/ h( B* K: Y) O
show mylist36 c) `' w% c" e1 S
end
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) D6 m5 z" s& B; m/ H6 {* S6 R这时的mylist1 和mylist3 应该是一样的 |
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