Daily Challenge #JS-102: Calculate Unique Elements in a Square Matrix (In C#)

JS-102.cs

/*
Calculate Unique Elements in a Square Matrix
Given a square matrix, write a function that computes the number of unique elements in the matrix. A square matrix is a two-dimensional array where the number of rows is equal to the number of columns.

Example:
Input: [[2, 3, 2], [9, 3, 1], [1, 2, 5]]
Output: 5
*/

int countUniqueElements(int[][] matrix) => matrix.SelectMany(m => m).Distinct().Count();


void Main()
{
	int[][] matrix = new int[][] { new int[] { 2, 3, 2 }, new int[] { 9, 3,1 }, new int[] { 1, 2, 5 }};
	
	countUniqueElements(matrix).Dump();

}