public void Q1_7() { int[,] matrix = new int[, ] { { 1, 2, 3 }, { 4, 0, 6 }, { 7, 8, 9 } }; DataStruct.Q07_SetZeros(matrix); int[,] expectedAnswer = new int[, ] { { 1, 0, 3 }, { 0, 0, 0 }, { 7, 0, 9 } }; Assert.IsTrue(matrix.Cast <int>().SequenceEqual(expectedAnswer.Cast <int>())); }