public void PointWiseMultiplySparseVector() { var zeroArray = new[] { 0.0, 1.0, 0.0, 1.0, 0.0 }; var vector1 = new SparseVector(this._data); var vector2 = new SparseVector(zeroArray); var result = new SparseVector(vector1.Count); vector1.PointWiseMultiply(vector2, result); for (var i = 0; i < vector1.Count; i++) { Assert.AreEqual(this._data[i] * zeroArray[i], result[i]); } Assert.AreEqual(2, result.NonZerosCount); }