Question

arraylist = [abc, def, ghi, jkl];

我应该如何使用每个语句来获得下面的输出：

firstdata = abc + def
seconddata = ghi, jkl

Answer 1

List<string> newList = new List<string>();
int index = 0;
string newValue = string.Empty;
foreach (var item in arraylist)
{
   newValue += item;
   index ++;
   if(index == 2)
   {
      newList.Add(newValue);
      index == 0;
   }
}

Answer 2

如果您希望输出为2个单独的列表，则可以通过using System.Linq

执行以下操作

var firstData = arraylist.Where((a, i) => i % 4 == 0 || i % 4 == 1);
var secondData = arraylist.Where((a, i) => i % 4 == 2 || i % 4 == 3);

如果您希望输出为连续字符串，则可以使用string.Join()

var firstData = string.Join("", arraylist.Where((a, i) => i % 4 == 0 || i % 4 == 1));
var secondData = string.Join("", arraylist.Where((a, i) => i % 4 == 2 || i % 4 == 3));

Answer 3

var x=1;
foreach(var item in arraylist){
    firstdata += item;
    x++;
    if(x>2){
       seconddata += item;
       x=1;
    }
}

如何获取数组列表中的每2个数据值

3 个答案: