两个数组比较，去掉重复的数据后生成第三个数组，这个怎么实现？

Question

string arr1 ["11","33","2","5555","9999"]string arr2 ["11","9999"]比较这两个数组，得到第三个数组（去掉两个数组中的重复数据）的结果是arr3["33","2","5555"]那么要得到第三个数组应该怎么实现呢？

Answer 1

string[] arr1={"11","33","2","5555","9999","10"};
            string[] arr2={"11","9999","1","2"};
            List<string> arr=new List<string>();
            foreach(string c1 in arr1)
            {
                arr.Add(c1);
            }
            foreach (string c2 in arr2)
            {
                if (!arr1.Contains(c2))
                {
                    arr.Add(c2);
                }
            }
            foreach(string c3 in arr)
            {
                Console.WriteLine(c3);
            }
            Console.ReadLine();