我写的这个计算语句,调试时通过,但是运行时出现了不知名的错误7 |) }# `1 T& f7 {
请达人帮我指出错误好改进( k2 J$ Y) E/ y% C+ y
( o2 n: I Q$ @" a+ X$ n+ @to find-distance
: ?7 A9 v4 T# V: t3 h let i 0
; @1 h( C% U- X9 ?8 | let nodedistance 0
3 S9 B% F& ~6 j' t let linknumber 0
1 a4 B, ?3 _4 L6 J: P* x+ A/ ^ while [i < count turtles]
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1 `, t. S5 p/ U; p3 k5 A7 b4 z3 T, L if link-neighbor? turtle i7 S$ }; _/ b! S
[set nodedistance (nodedistance + sum ([link-length] of turtle i))
# ^- V( p1 m. C7 M. X1 n set linknumber (linknumber + count [link-neighbors] of turtle i)]$ _, k$ J- W% n; K, M3 B
if linknumber != 0
# M# [. \1 c2 w# v/ | [
+ M7 w G7 G6 i set average-node-distance (nodedistance / linknumber)
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set i i + 1
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end
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+ ~5 ?/ G3 W+ g[ 本帖最后由 qy987 于 2008-11-12 02:18 编辑 ] |