### Question:
DiVector { public void renormalize(double targetNorm) { double norm = getHighLowSum(); if (norm > 0) { double scaleFactor = targetNorm / norm; for (int i = 0; i < dimensions; i++) { high[i] = high[i] * scaleFactor; low[i] = low[i] * scaleFactor; } } } DiVector(int dimensions);  DiVector(DiVector base); static DiVector addToLeft(DiVector left, DiVector right); int getDimensions(); DiVector scale(double z); void renormalize(double targetNorm); void componentwiseTransform(Function<Double, Double> function); double getHighLowSum(int i); double getHighLowSum(); final double[] high; final double[] low; }### Answer:
@Test public void testRenormalize() { vector.high[0] = 1.1; vector.high[2] = 3.1; vector.low[1] = 2.2; assertEquals(1.1 + 3.1 + 2.2, vector.getHighLowSum()); vector.renormalize(100.0); assertEquals(100.0, vector.getHighLowSum()); }