C# 日期时间数组

Question

我有两个数组，array1 的日期时间数据从上午 8 点到下午 2 点按分钟计数，而数组 2 的日期时间数据从同一日期上午 8 点到下午 1 点按小时计数。

我想输出具有相同 datetime.hour 的两个数组的索引号。并且它应该匹配 array2 的最后一个可用索引号，用于 array1 中所有晚于 array2 的日期时间数据。

例如，如果我有两个这样的日期时间数组：

DateTime[] dateTimes1 = new DateTime[]
        {

            new DateTime(2010, 10, 1, 8, 15, 0),
            new DateTime(2010, 10, 1, 8, 30, 1),
            new DateTime(2010, 10, 1, 8, 45, 2),
            new DateTime(2010, 10, 1, 9, 15, 3),
            new DateTime(2010, 10, 1, 9, 30, 4),
            new DateTime(2010, 10, 1, 9, 45, 5),
            new DateTime(2010, 10, 1, 10, 15, 6),
            new DateTime(2010, 10, 1, 10, 30, 7),
            new DateTime(2010, 10, 1, 10, 45, 8),
            new DateTime(2010, 10, 1, 11, 15, 9),
            new DateTime(2010, 10, 1, 11, 30, 10),
            new DateTime(2010, 10, 1, 11, 45, 11),
            new DateTime(2010, 10, 1, 12, 15, 12),
            new DateTime(2010, 10, 1, 12, 30, 13),
            new DateTime(2010, 10, 1, 12, 45, 14),
            new DateTime(2010, 10, 1, 13, 15, 15),
            new DateTime(2010, 10, 1, 13, 30, 16),
            new DateTime(2010, 10, 1, 13, 45, 17),
            new DateTime(2010, 10, 1, 14, 15, 18),
            new DateTime(2010, 10, 1, 14, 30, 19),
            new DateTime(2010, 10, 1, 14, 45, 20),
        };

        DateTime[] dateTimes2 = new DateTime[]
        {
            new DateTime(2010, 10, 1, 8, 0, 0),
            new DateTime(2010, 10, 1, 9, 0, 1),
            new DateTime(2010, 10, 1, 10, 0, 2),
            new DateTime(2010, 10, 1, 11, 0, 3),
            new DateTime(2010, 10, 1, 12, 0, 4),
            new DateTime(2010, 10, 1, 13, 0, 5),
        };

它应该给我输出：

0, 0
1, 0
2, 0
3, 1
4, 1
5, 1
6, 2
7, 2
8, 2
9, 3
10, 3
11, 3
12, 4
13, 4
14, 4
15, 5
16, 5
17, 5
18, 5
19, 5
20, 5

这是我尝试过的：

            int i = 0;
            int j = 0;
            while (i < dateTimes1.Length && j < dateTimes2.Length)
            {     
                if (dateTimes1[i].Date == dateTimes2[j].Date && dateTimes1[i].Hour == dateTimes2[j].Hour)
                {
                    list.Add(i);
                    list2.Add(j);
                    i++;
                }
                else if (dateTimes1[i] < dateTimes2[j])
                {
                    i++;
                }
                else if (dateTimes1[i] > dateTimes2[j])
                {
                    j++;
                }
            }
            for (int k = 0; k < list.Count; k++)
            {
                Console.WriteLine(list[k] + " , " + list2[k];
            }

但它不会在下午 1 点后输出索引号。

Answer 1

你的两个列表的长度不一样。在while语句中，您尝试同时迭代两个不同长度的列表。

如果我正确理解您的要求，您应该使用内部循环执行类似的操作：

DateTime[] dateTimes1 = new DateTime[]
    {

        new DateTime(2010, 10, 1, 8, 15, 0),
        new DateTime(2010, 10, 1, 8, 30, 1),
        new DateTime(2010, 10, 1, 8, 45, 2),
        new DateTime(2010, 10, 1, 9, 15, 3),
        new DateTime(2010, 10, 1, 9, 30, 4),
        new DateTime(2010, 10, 1, 9, 45, 5),
        new DateTime(2010, 10, 1, 10, 15, 6),
        new DateTime(2010, 10, 1, 10, 30, 7),
        new DateTime(2010, 10, 1, 10, 45, 8),
        new DateTime(2010, 10, 1, 11, 15, 9),
        new DateTime(2010, 10, 1, 11, 30, 10),
        new DateTime(2010, 10, 1, 11, 45, 11),
        new DateTime(2010, 10, 1, 12, 15, 12),
        new DateTime(2010, 10, 1, 12, 30, 13),
        new DateTime(2010, 10, 1, 12, 45, 14),
        new DateTime(2010, 10, 1, 13, 15, 15),
        new DateTime(2010, 10, 1, 13, 30, 16),
        new DateTime(2010, 10, 1, 13, 45, 17),
        new DateTime(2010, 10, 1, 14, 15, 18),
        new DateTime(2010, 10, 1, 14, 30, 19),
        new DateTime(2010, 10, 1, 14, 45, 20),
    };

    DateTime[] dateTimes2 = new DateTime[]
    {
        new DateTime(2010, 10, 1, 8, 0, 0),
        new DateTime(2010, 10, 1, 9, 0, 1),
        new DateTime(2010, 10, 1, 10, 0, 2),
        new DateTime(2010, 10, 1, 11, 0, 3),
        new DateTime(2010, 10, 1, 12, 0, 4),
        new DateTime(2010, 10, 1, 13, 0, 5),
    };

    int i = 0;
    while (i < dateTimes1.Length)
    {
        int j = 0;
        while (j < dateTimes2.Length))
        {
            if (dateTimes1[i].Date == dateTimes2[j].Date && dateTimes1[i].Hour == dateTimes2[j].Hour)
            {
                list.Add(i);
                list2.Add(j);
                i++;
            }
            else if (dateTimes1[i] < dateTimes2[j])
            {
                i++;
            }
            else if (dateTimes1[i] > dateTimes2[j])
            {
                j++;
            }
        }
    }
    for (int k = 0; k < list.Count; k++)
    {
        Console.WriteLine(list[k] + " , " + list2[k];
    }