float[,] y1 = new float[1, 5];
y1[0, 0] = 5;
y1[0, 1] = 4;
y1[0, 2] = 3;
y1[0, 3] = 2;
y1[0, 4] = 1;
y1
{Dimensions:[1, 5]}
[0, 0]: 5.0
[0, 1]: 4.0
[0, 2]: 3.0
[0, 3]: 2.0
[0, 4]: 1.0