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发表于 2010-5-11 13:19:52
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用list吧8 Z6 R6 c; f$ o$ ]. m$ _0 E
patches-own [wealth rank] Q/ c; n# h% E: \. _' F- H
to setup
: r7 W, `/ F- b2 g2 |6 D. D6 T% t ca
6 g$ k+ G: b: q' Q* [: h ask patches [set wealth random 100 set pcolor green ]
( }2 T* K1 r5 wend1 f- u5 q$ G4 [* g# p
3 K! ^" @. P$ Dto go
1 t& b- z2 w) s. Z" G. K# m8 S! l0 I6 ~ let mylist1 []
/ y& S" H( A' P# b set mylist1 sort-by [[wealth] of ?1 < [wealth] of ?2] patches3 h# j7 f3 G8 J: z) ~ k
let mylist2 []
" U' P$ v" M+ e set mylist2 n-values count patches [? + 1]
0 G9 }8 X: r/ |; t6 b
6 `8 C1 T' I' ^( M' E ( foreach mylist1 mylist2: J* k7 U8 e4 P. `! g* ?! ]
[
" J: ~% d$ C8 s* \8 w3 d1 l) _. L ask ?1[ set rank ?2]1 D5 P1 t% c8 u: L' H
show [rank] of ?15 S ~$ q r) b# n
# R' s2 n5 ~) Z/ S5 T- f) ]
]
" F! W8 _! G; {+ q! h7 i+ V6 p )
* e O X/ ^0 U9 j2 I let mylist3 []5 m8 _; d+ X1 K1 J: ?& D& O) a$ X
4 \) b0 p! Q3 b. p# m
set mylist3 sort-by [[rank] of ?1 < [rank] of ?2] patches
" J% X0 y0 |7 k4 s t5 F9 u show count patches
_: L, C$ z) x1 L# M! [ show mylist1 0 M: o9 y8 ^7 z8 {) Y0 G
show mylist3# C( g+ u; V. A9 e# e
end* w, d- i8 i- j0 P9 L! u
b4 ^1 a: O- l这时的mylist1 和mylist3 应该是一样的 |
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