4) Sigma(......) i from 1 to n.
所有跟帖:
• 4)Too old to be fast, It should be (n+1)!/2 by recursive. -jinjing- ♀ (0 bytes) () 08/01/2011 postreply 14:01:06
• 4)Too old to be fast, It should be (n+1)!/2 by recursive. -jinjing- ♀ (0 bytes) () 08/01/2011 postreply 14:01:06