c# - 根据特定条件将列表分为两个列表

Question

另一个程序正在向我的程序传递对象列表。这些对象具有名为Title的属性，在此列表中，其中一个对象的标题与第一个对象的标题匹配。我想将此列表分为两个列表，将第二个对象具有与第一个相同的标题作为标志，以将其余对象写入另一个列表。我编写了一个小的示例程序，该程序指示我要完成的工作。我希望那里有人可以指出正确的方向。

static void Main(string[] args)
{
    var names = new string[] {"Frank", "Jules", "Mark", "Allan", "Frank", "Greg", "Tim"};
    var listA = new List<string>();
    var listB = new List<string>();

    foreach (var name in names)
    {
        // Add all names to listA, until name is the next "Frank".  
        // If name is the next "Frank" add name and all remaining
        // names to listB.

        // So, listA would contain "Frank", "Jules", "Mark", "Allan"
        // listB would contain "Frank", "Greg", "Tim"
    }
}

Answer 1

这就是我的处理方式（认为它使用LINQ，您可以不使用它）：

void Main()
{
        var names = new string[] {"Frank", "Jules", "Mark", "Allan", "Frank", "Greg", "Tim"};
        var listA = new List<string>();
        var listB = new List<string>();

        // I'm not entirely sure where this comes from other than it's always
        // the first element in the "names" list.
        var needle = names[0]; // "Frank"

        // this finds the location of the second "Frank"
        var splitLocation = Array.IndexOf(names, needle, 1);

        // here we grab the first elements (up to the splitLocation)
        listA = names.Take(splitLocation).ToList();
        // here we grab everything past the splitLocation
        // (starting with the second "Frank")
        listB = names.Skip(splitLocation).ToList();
}