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发表于 2010-5-11 13:19:52
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用list吧
! L5 d. v; z/ C6 M& ypatches-own [wealth rank]
" [% k5 l- l# Vto setup: r# H$ b+ V1 g) T* z
ca; o4 B! a3 z# V! c
ask patches [set wealth random 100 set pcolor green ]' S- `. ?1 k6 a
end: C3 r& O0 q2 I7 O' w) g; m
) E. T8 h- q0 D: Y+ x5 J$ [& ]! X; Bto go& X. ]. h) O! e; q
let mylist1 []" X7 P5 D% Y% B# J! w0 ]
set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
1 x- f5 b7 {6 N& X let mylist2 []& a& }% K% w8 X4 ^
set mylist2 n-values count patches [? + 1]
3 E6 M1 X( L1 C5 \$ K F- i( @ $ M. |7 J' R, P0 b
( foreach mylist1 mylist2
$ }( [ S7 Q/ D [
3 c) ~0 q+ B. a' | ask ?1[ set rank ?2]
, D; i: }; ?% }: E$ R4 L+ P show [rank] of ?1
( }0 o2 @( D$ s; F1 a" E. g! P 8 i+ ?9 H4 W @8 e- U
]
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, S+ I$ [3 g; ?1 m( r let mylist3 []# j0 j4 x/ M6 w" M" m
5 \0 {) [: H8 U% y
set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches
3 O: F% f$ R! }+ _3 N show count patches3 P7 B2 H, V" T: R8 u! ^# _
show mylist1
3 s6 l. J& |: s9 A/ G show mylist3* |, }( b: ~( ]: X* D
end
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; }8 S" e5 Y4 l1 P% q这时的mylist1 和mylist3 应该是一样的 |
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