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发表于 2010-5-11 13:19:52
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用list吧- L# [7 p/ b9 F( S9 a4 _! j
patches-own [wealth rank]$ p. C( Y; X: ^
to setup
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" f& V4 V4 u1 T5 q ask patches [set wealth random 100 set pcolor green ]
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to go
+ {4 q5 z7 g3 u, K) T0 v- j let mylist1 []8 A: v* Y1 s' U. k+ h
set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches8 O5 u, O$ G7 F6 c0 j
let mylist2 []+ ?. z$ I) Q2 |$ ]0 A% j' \
set mylist2 n-values count patches [? + 1]
% \* }* d7 n M $ X( D& X) @4 t- n- F S
( foreach mylist1 mylist2
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ask ?1[ set rank ?2]
+ m5 \ T$ [# Q4 g' q show [rank] of ?1, f9 M4 c2 K( [# @5 W) G# @
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]
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let mylist3 []* t4 {( g- A) ^: a
9 j B" ^! Y! f3 A: |+ L6 c set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches
& u' ]. I: D3 E8 w4 y4 L! ` show count patches
; w# q7 c {; r7 }: p h% A show mylist1 5 ^" r2 u) v6 H. r8 k
show mylist3
' ~- S1 g4 g* l: oend
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9 I+ B. w' x1 W这时的mylist1 和mylist3 应该是一样的 |
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