c#简单数组处理问题....

Question

string [] str={"a","b","c","d","e","f","g","h"}
string s1="d"
就是说.  这个字符串s1是否存在这个数组str里..有没有办法把他很快查出来..除了用FOR遍历....高手指导`!!!

Answer 1

遍历循环已经是最快的了：
string[] str = { "a", "b", "c", "d", "e", "f", "g", "h" };
foreach (string s in str)
if (s == "d")
Console.WriteLine("已找到" + s);
Console.ReadKey();

Answer 2

能有多大的数组啊，要是很大，不知道是否SORT过。若SORT过，循环遍历应该不是最快的。

Answer 3

linq
            string [] str={"a","b","c","d","e","f","g","h"};
            string s1="d";            var query = from s in str where s.CompareTo(s1) == 0 select s;

Answer 4

void Main()
{
  string [] str={"a","b","c","d","e","f","g","h"};
string s1="d";
  Console.WriteLine(str.Count(s=>s.Equals(s1)) );
 }

Answer 5

      string[] str = { "a", "b", "c", "d", "e", "f", "g", "h" };
      string s1 = "d";
      string s2 = str.FirstOrDefault(f => f == s1);

Answer 6

string [] str={"a","b","c","d","e","f","g","h"};
            string s1 = "i";
            if (str.Contains(s1))
            {
                MessageBox.Show("存在"+s1);
            }