比较2序列IEnumerable.Except在C＃ [英] Compare 2 sequences IEnumerable.Except in C#

问题描述

我想比较这两个序列之间的不同使用 IEnumerable.Except 。

I want to compare how these two sequences are different using IEnumerable.Except.

程序说明:: 该方案是一个抛硬币游戏。 1头，2是尾巴。

Program Description:: The program is a Coin Toss Game. 1 is heads, 2 is tails.

该程序循环5次，每次循环的程序检查，如果数字匹配的时间。数字是1或2我用随机的。如果硬币匹配它更新到列表视图。

The program loops 5 times, each time it loops the program checks if the numbers matched. Numbers are 1 or 2 I used Random. If the coin matches it updates it to the listView.

标签：（ lbl_Numb_1 ， lbl_Numb_2 ， lbl_Numb_3 ， lbl_Numb_4 ）生成随机数，1或2。 lbl_Result_1 拷贝数 lbl_Numb_2 并将它们添加到ListView1的。 lbl_Reslt_2 复制 lbl_Numb_4 键，将其添加到listview2。

Label: (lbl_Numb_1, lbl_Numb_2, lbl_Numb_3, lbl_Numb_4) generate random numbers, either 1 or 2. lbl_Result_1 copies the number in lbl_Numb_2 and adds them to the listview1. lbl_Reslt_2 copies lbl_Numb_4 and adds it to the listview2.

我已经尝试过自己，但我似乎不能将它得到它。是否有人可以帮助我。

I've tried it myself, but I can't seem it get it. Can someone please help me out.

private void btn_Match_Click(object sender, EventArgs e)
{
    //.Next means so that random number is not negative
    lbl_Numb_1.Text = rand.Next(1, 3).ToString();
    lbl_Numb_2.Text = rand.Next(1, 3).ToString();
    //Random Numbers for listbox2
    lbl_Numb_3.Text = rand.Next(1, 3).ToString();
    lbl_Numb_4.Text = rand.Next(1, 3).ToString();

    //This is for the first listbox. 
    if (lbl_Numb_1.Text == lbl_Numb_2.Text)
    {
        lbl_Result_1.Text = lbl_Numb_2.Text;
        //i = shows sequence id
        ListViewItem lvi = new ListViewItem("" + i);
        lvi.SubItems.Add(lbl_Result_1.Text);
        listView1.Items.Add(lvi);
    }

    //This is for the secound listbox
    if (lbl_Numb_3.Text == lbl_Numb_4.Text)
    {
        lbl_Result_2.Text = lbl_Numb_4.Text;
        //i = shows sequence id
        ListViewItem lview = new ListViewItem("" + i);
        lview.SubItems.Add(lbl_Result_2.Text);
        listView2.Items.Add(lview);
    }
}

推荐答案

在使用IEnumerable.Except（），你必须要小心。因为从你比较的基础上的结果不同。 例如：

While using IEnumerable.Except() you need to be careful. Because the result differs based on from what you compare. Example:

       List<int> l1 = new List<int>();
        l1.Add(1);
        l1.Add(2);
        l1.Add(3);

       List<int> l2 = new List<int>();
        l2.Add(2);
        l2.Add(4);

        IEnumerable<int> l3 = l2.Except(l1); // l3 will have 4
        IEnumerable<int> l4 = l1.Except(l2); //l4 will have 1,3

你可以做的是使用IEnumberable.Except两种方式，并将其存储在一个单一的列表。

What you can do is use IEnumberable.Except in both ways and store it in a single List.

  IEnumerable<int> e1 = l2.Except(l1);   
  IEnumerable<int> e2 = l1.Except(l2);

    List<int> l3 = new List<int>();
    foreach (var item in e1)
    {
        l3.Add(item);
    }

    foreach (var item in e2)
    {
        l3.Add(item);
    }

13将举行哪些不是present在这两个列表中的项目。

l3 will hold items which are not present in both the lists.

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