Question

我不知道我是在失去理智还是甚至可能。

顺便说一句，我没有使用任何标准库，因此这不依赖于语言，因此它就在这里，而不是在stackoverflow上。

我有两个时间段以int格式传递给我。

1st period-
    Start Time:
    End Time:

2nd period-
    Start Time:
    End Time:

Int的是午夜以来的分钟，所以早上7点是420分钟。

所以我想写的函数的一个例子是：

bool SpanMoreThan24Hours(int firstStartTime, int firstEndTime,
                         int secondStartTime, int secondEndTime)
{
    ....
}

我甚至不确定这可以做到。

P.S。跨越午夜是好的，但它没有必要。期间不能重叠。

So it could look like this:
420, 1140, 1260, 419
7am, 7pm,  9pm,  6:59am
- Valid
This would be valid since it doesn't span over 24 hours.

420, 1140, 1260, 421
7am, 7pm,  9pm,  7:01am
- Not valid

420, 60, 120, 419
7am, 1am,2am, 6:59am
- Valid

我必须确保从第1期开始时间到第2期结束时间不超过24小时。

Answer 1

如果一个时期可以在周一开始并在周三结束，那么这个问题就无法解决;否则，这里有一些C＃给你：

int MinutesBetweenTwoTimes(int time1, int time2)
{
    return time1 < time2 ? time2 - time1 : (1440-time1) + time2;
}

bool SpanMoreThan24Hours(int firstStartTime, int firstEndTime,
                         int secondStartTime, int secondEndTime)
{
    int totalSpannedTime = MinutesBetweenTwoTimes(firstStartTime, firstEndTime)
                           + MinutesBetweenTwoTimes(firstEndTime, secondStartTime) 
                           + MinutesBetweenTwoTimes(secondStartTime, secondEndTime);
    return totalSpannedTime > 1440;
}

Answer 2

我可能会误解，但你不能只检查是否 firstStartTime＆lt; = secondEndTime？

Answer 3

如果我读得对，我认为这有效，不是吗？

bool SpanMoreThan24Hours(int firstStartTime, int firstEndTime,
                     int secondStartTime, int secondEndTime)
{

   // Logically, you'll only have a span > 24 hours if one of them spans midnight
   if ( firstStartTime > firstEndTime || secondStartTime > secondEndTime )
   {

       // Check for period overlap:
       // If the second period doesn't span midnight, this means the first does.
       // So check for overlap:
       if ( secondStartTime <= secondEndTime && firstEndTime > secondStartTime ) 
         throw new Exception ("Periods cannot overlap");

       // If *both* periods span midnight, this means they logically overlap.
       else if ( firstStartTime > firstEndTime && secondStartTime > secondEndTime )
         throw new Exception ("Periods cannot overlap");

      // If we get to here, we know that the periods don't overlap, yet they span midnight
      // The answer now is simply if the end of the second span is after the first begins
      return secondEndTime > firstStartTime;
   }

   // Neither period span midnight, so overlap check is a snap:
   if ( firstEndTime > secondStartTime ) 
     throw new Exception ("Periods cannot overlap");

   // No errors (no overlaps) and no midnight span means
   // the only logical result is that this is not > 24 hours
   return false;
}

弄清楚跨越的小时数是否大于24小时

3 个答案: