Distinct values 2d array

Question

I have a 2D array as follows:

long[,] arr = new long[4, 4] {{ 5, 0, 0, 0 },
                              { 8, 1, 1, 1 },
                              { 0, 3, 0, 6 },
                              { 1, 1, 1, 1 }};

How I can display distinct values form this array?

Answer 1

您可以使用Enumerable.Distinct方法：

var uniqueValues = arr.Cast<long>().Distinct();