中秋快乐！同一个字符数组中，怎么合并两个值相同的元素？

Question

比如这样的：string[] arr=new string[]{"a","b","c","a","d","a","b"};
string[] arrResult=new string[]{"a","b","c","d"};如何把数组arr中重复的元素a和b去掉，最终把它变成arrResult样的？
谢谢！

Answer 1

string[] arr = new string[]{"aa","bb","bb,"cc"};
List<string> list = new List<string>();
foreach(string s in arr)
{
    if(list.Contains(s)) continue;
    list.Add(s);
}得到list 就是结果

Answer 2

string[] arrResult = arr.Distinct().ToArray();

Answer 3

string[] arr = new string[] { "a", "b", "c", "a", "d", "a", "b" };
            List<string> list = new List<string>();
            foreach (string s in arr)
            {
                if (list.Contains(s)) continue;
                list.Add(s);
            }

Answer 4

    string[] aa = { "a", "b", "c", "d", "b", "a" };
            string[] bb = aa.Distinct().ToArray();
            for (int i=0;i <bb.Length;i ++)
            {
            Response.Write(bb[i]);
            }
        }
result：abcd