C# 移除數組中重複項

方法一:

  static void Main(string[] args)
        {
            //看到數組的第一反應應該是排序
            int[] array = { 2,4,6,2,8,5,8,10};

            //去掉數組中重複的項
            //先排序

            arrayAsc(array);

            List<int> list = array.ToList();

            for (int i = 0; i < list.Count-1; i++)
            {
                if(list[i]== list[i+1])
                    list.RemoveAt(i+1);

            }

            for (int i = 0; i < list.Count - 1; i++)
            {
                Console.WriteLine(list[i]);
            }
            

            Console.ReadKey();


        }




/// <summary>
        /// 排序
        /// </summary>
        /// <param name="array"></param>
        /// <returns></returns>
        private static void  arrayAsc(int[] array)
        {
            int i, j, temp;
            for (i = 0; i < array.Length-1; i++)
            {
                for (j = i+1; j < array.Length; j++)
                {
                    if (array[i] > array[j])
                    {
                        temp = array[i];
                        array[i] = array[j];
                        array[j] = temp;
                    }
                }
            }
      
        }

方法二；

int[] arry_new = { 3, 5, 9, 8, 10, 5, 3 };

HashSet<int> set = new HashSet<int>();

foreach (int i in arry_new)
{
set.Add(i);

}

int[] at = set.ToArray();

for (int i = 0; i < at.Length - 1; i++)
{
Console.WriteLine(at[i]);
}

Console.ReadKey();