回复：结果是怎么来的？

numtodsinterval(150, 'DAY')	would return '+000000150'
numtodsinterval(1500, 'HOUR')	would return '+000000062'
numtodsinterval(15000, 'MINUTE')	would return '+000000010'
numtodsinterval(150000, 'SECOND')	would return '+000000001'

1) 150 days = 150 days

2) 1500 Hours /24 = 62.5 days ==> 0000000062

3) 15000 minutes /(24*60) = 10.41 days ===> 000000010

4) 150000 second /(60*60*24) = 1.736 days ==>000000001

将以第二项为单位的第一个数换算成整数天

所有跟帖： 

• thank you very much, now got it -虚心学习1- ♀ (30 bytes) () 04/10/2012 postreply 18:38:11

• 谢谢超级潜水员 -虚心学习1- ♀ (47 bytes) () 04/10/2012 postreply 18:47:12