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发表于 2010-5-11 13:19:52
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用list吧3 S' I& S9 d' Q2 y4 A, z5 }. L. y
patches-own [wealth rank]6 r( W8 X" K) u+ ]* Q* ^( d9 `
to setup$ i5 q/ ~/ _& M. ` N) ? k, s
ca
: F1 T8 E6 e# Y ask patches [set wealth random 100 set pcolor green ] f& v" \+ k5 [" p$ r9 V# X+ C
end/ M) e. R# `. V+ U) v2 |
6 n" A. j8 W$ X" ~% o( f% uto go
7 z# D* B1 y: j# y# K$ Q6 ^ let mylist1 []
# K, B/ T+ d, U& y/ X/ I! ~ set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches
( ?/ Q/ }# l* [8 x Y# Q let mylist2 []
, P8 k, Z5 k8 ?- C set mylist2 n-values count patches [? + 1]
* o' X: y) f# ^! x
; `6 D! M* v6 p: Q ( foreach mylist1 mylist25 s6 a% A1 l6 @' }6 j
[
" _7 O7 S) o% l5 S2 q Q0 Y ask ?1[ set rank ?2]/ S, r7 d) L- i. Y7 G& I6 k
show [rank] of ?10 _1 H- B" \, {5 G% ^' B- ^
1 D7 A5 x- z$ f! |$ y4 \5 f
]
7 O* |1 S: L; z1 M. b ); K2 R* i S/ ?8 H, q
let mylist3 []3 ?; `! ~, r, d+ u
. f6 l% K( y! S" @8 A set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches3 Y9 @% W8 u, G. e7 }0 Q/ [: V
show count patches
3 A1 ^8 M) E: p# Y5 M show mylist1 5 |- U3 z( C( Y4 m- E6 [/ L1 B, L
show mylist3
) T9 {( B! E8 x) Q; \2 {end# [$ z9 a T: w+ M, q
" t G9 f5 x2 F7 t, c8 ]6 M; z这时的mylist1 和mylist3 应该是一样的 |
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