# 79 chars
sub nn9 {
  @_=sort@_;$_{$_[$_]-$_[$_-1]}=[@_[$_-1,$_]]for 1..$#_;@{$_{(sort key
+s%_)[0]}}
}

[download]

snowcrash //////

In reply to Re: (Golf) Nearest Neighbors by snowcrash
in thread (Golf) Nearest Neighbors by MeowChow

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