回复：上套题

3. algorithm
foreach(1 to 101)
xor element and get result
foreach(element in collection)
xor elements using result from last step

The missing number should be that result.

4. Can it be more specific?

所有跟帖： 

• I think you should sort the array at first. ^^ -梅影- ♀ (0 bytes) () 11/01/2007 postreply 08:09:16