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发表于 2010-5-11 13:19:52
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用list吧9 {9 F M7 l) N: [: x9 q
patches-own [wealth rank]4 u3 e) b7 c9 }
to setup
' g+ W" {- b% w* t6 X0 |) D* d/ T ca
; P* ?- d+ P# C ]5 p" K0 u ask patches [set wealth random 100 set pcolor green ]
# s+ W/ q1 y: g& e7 G9 Wend1 W C& L( q- Z' p
0 q, T% u' {/ r7 }/ D5 O# Wto go
+ N* U" M# @5 l0 H/ { let mylist1 []- K& J& B& ~$ C% @4 h7 ~1 k9 G
set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
+ { U. I% l% P! ~% }* S1 A let mylist2 []+ w& A0 E& l2 ~' O. M/ d1 _" I% C
set mylist2 n-values count patches [? + 1]
3 K$ l$ U, m X5 C- O% q 4 f! k" y7 B7 j+ l
( foreach mylist1 mylist2, s( x7 J& z0 n! n/ e5 y
[
9 U# ?0 D8 ^& n- r8 a! } B7 ^ ask ?1[ set rank ?2]8 {$ y& e1 O" Z! E# ?4 y$ s
show [rank] of ?1
7 l9 \& @0 W! c* {$ t3 G; j- x # }8 ?5 K ]; a9 P& \* B
]
$ ^; e- L- \5 Z- q7 R& S )
$ m6 s. w! T6 }1 W9 a1 ~' ^ let mylist3 []
0 x2 s" b1 R4 ?* u5 p; L
$ s# A9 Z7 c/ ~; U0 G set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches/ H9 I E$ w: I8 l
show count patches
5 }4 [9 ]2 I* K. P8 v/ |0 C show mylist1
8 f, Z8 q- l. m6 _ show mylist3
4 U/ Z* |4 s: f$ p- q; R0 w' |! f, B1 Eend# n# j( T4 d* i
- T9 \% y& B4 \
这时的mylist1 和mylist3 应该是一样的 |
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