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发表于 2010-5-11 13:19:52
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用list吧/ y8 F) I [. t1 U0 M2 Q" K
patches-own [wealth rank]' a; r4 U) G0 E
to setup
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ask patches [set wealth random 100 set pcolor green ]
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6 X% U& Z/ d9 C" w; z% s; I V: _ let mylist1 []2 j2 a# ?5 Y M7 @3 f/ Z& ?
set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches/ a& `- e$ Z7 D" A! ]; L
let mylist2 []
% V2 g' g7 P* U I/ {0 \4 n9 v9 U set mylist2 n-values count patches [? + 1]
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( foreach mylist1 mylist2
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( u$ `, Z( V: z3 A3 s ask ?1[ set rank ?2]( B) A- m3 a l
show [rank] of ?13 U: s+ Z9 f) [
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% N% G5 R; m' Y let mylist3 []
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+ P: P$ t% w: o7 ?9 x7 v set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches
/ V* ?1 r) D& u& [8 x; i3 v( s0 ` show count patches
2 w# m. z. ?/ J. m) F show mylist1 / B$ z7 N/ `( ]9 w O
show mylist3
+ Y$ ]- k/ F$ B4 ?! Kend
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这时的mylist1 和mylist3 应该是一样的 |
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