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发表于 2010-5-11 13:19:52
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用list吧2 }: c1 F6 Y. S0 z! B- G
patches-own [wealth rank]; I/ M1 A p5 s" R% L
to setup" w# A9 E7 E/ L, _, J, p& u9 l5 A, ]
ca
( O. R6 ?3 h/ G% M ask patches [set wealth random 100 set pcolor green ]
1 f: i* x" S/ Fend
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% w i& b2 M) A0 o( }* E. C' q9 o$ Dto go
/ p: `) u' z2 \% A1 M0 f let mylist1 []
$ E! e8 ?- b* V3 r3 w; b1 l5 k6 F set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
. }& l# ~1 ?) f1 ^0 S% ` let mylist2 []( l, T j# |5 ]1 F/ B1 h, r Y
set mylist2 n-values count patches [? + 1]& ]7 U N: m$ F* e1 s
4 K S w& a# h6 X5 z. Z5 U2 u ( foreach mylist1 mylist2/ E: ]2 v. ~1 t7 h2 }* K
[
: l. ?0 p) L* T8 t1 A ask ?1[ set rank ?2]: {9 g4 q8 ?7 R; I: d: V
show [rank] of ?1% w) N! e0 w( W3 G0 t- [8 s
9 a; v0 ]/ M- K6 r9 v9 d
]
& r- W5 k& M! s% b4 n9 D J; P7 H+ o )4 X, F9 d; r- O7 l( R& S: z
let mylist3 []
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set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches% e3 l/ ?% X8 ^9 l, E! {% N
show count patches) e/ Q1 e; W4 {* Q v9 [7 O( G2 N
show mylist1
# q9 n! P4 z' l3 T+ X show mylist3
9 u9 t+ q* `, \/ N; M \# lend; U7 O6 H& |6 [9 W9 |* u' a2 m
1 M' T9 `; s+ m7 `! ?/ x
这时的mylist1 和mylist3 应该是一样的 |
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