一个基础问题

max{1,2,3}=3, max{}=? what number should be the answer if the set of positive numbers is empty? and the same problem
sum{1,2,3}=6, sum{}=? what number should be the answer if the set of positive numbers is empty? At some place sum{}=0. Is it the same for max{}?

Many thx.

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• 回复：一个基础问题 -碧玉箫- ♂ (8 bytes) () 12/13/2005 postreply 12:59:53