" constructor).";
// Special case for sparse Vectors, for which we already know the
// non-zero indices for the column
if (column instanceof SparseVector) {
SparseVector s = (SparseVector)column;
int[] nonZero = s.getNonZeroIndices();
nonZeroValues += nonZero.length;
System.out.println(nonZero.length);
try {
matrixDos.writeInt(nonZero.length);
for (int i : nonZero) {