如何从时间戳列表中获取开始和结束范围？ [英] How to get start and end range from list of timestamps?

问题描述

我有一个这样的时间戳字符串：

I have a timestamp string like this:

2016-01-14T22:43:55Z
2016-01-15T00:04:50Z
2016-01-15T00:44:59+08:30
2016-01-15T01:25:35-05:00
2016-01-15T01:44:31+08:30
2016-01-15T02:22:45-05:00
2016-01-15T02:54:18-05:00
2016-01-15T03:53:26-05:00
2016-01-15T04:32:24-08:00
2016-01-15T06:31:32Z
2016-01-15T07:06:07-05:00

我想对它们进行排序，以便我可以获得起始范围和从上面的时间戳结束范围。我的行为如下：

I want to sort them so that I can get what is starting range and ending range from above timestamp. I am doing like below:

List<String> timestamp = new ArrayList<>();
// adding above string timestamp into this list
// now sort it
Collections.sort(timestamp);

这将从上面的时间戳列表中给出开始和结束范围。这是正确的方法还是有更好的方法？

This will give me start and end range from the above list of timestamp. Is this the right way to do it or there is any better way?

timestamp.get(0); // start range
timestamp.get(timestamp.size() - 1); // end range

更新

所以我应该做类似下面的事情：

So I should do something like below:

List<OffsetDateTime> timestamp = new ArrayList<>();
timestamp.add(OffsetDateTime.parse( "2016-01-15T00:44:59+08:30" ));
// add other timestamp string like above and then sort it
Collections.sort(timestamp);

timestamp.get(0); // start range
timestamp.get(timestamp.size() - 1); // end range

推荐答案

OffsetDateTime

解析那些 ISO 8601 将字符串转换为 java.time.OffsetDateTime 对象。

OffsetDateTime

Parse those ISO 8601 strings into java.time.OffsetDateTime objects.

OffsetDateTime.parse( "2016-01-15T00:44:59+08:30" )

将这些日期时间对象添加到集合并进行排序。您可能需要 List ，例如 ArrayList 或 SortedSet 。

Add those date-time objects to a Collection and sort. You probably want a List such as ArrayList or a SortedSet.

java.time类实现 compareTo 方法，以 可比较 。所以这些对象知道如何排序。

The java.time classes implement the compareTo method, to fulfill their contract as a Comparable. So these objects know how to sort.

像这样：

List<OffsetDateTime> odts = new ArrayList<>();

OffsetDateTime odt = OffsetDateTime.parse( "2016-01-15T00:44:59+08:30" ) ;
odts.add( odt );
… // Parse remaining ISO 8601 strings, adding each new OffsetDateTime object to collection.

Collections.sort( odts );

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