public MatrixEntry next() {
Entry<Integer, Double> ele = null;
if (rowIter.hasNext()) {
ele = rowIter.next();
entry.eleInCol = ele;
} else if (colIter.hasNext()) {
Entry<Integer, Map<Integer, Double>> nextCol = colIter.next();
entry.col = nextCol;
rowIter = nextCol.getValue().entrySet().iterator();
ele = rowIter.next();
entry.eleInCol = ele;
}
return entry;
}
public boolean hasNext() {
if (rowIter != null && rowIter.hasNext()) return true;
else {
while (colIter.hasNext()) {
Entry<Integer, Map<Integer, Double>> nextCol = colIter.next();
rowIter = nextCol.getValue().entrySet().iterator();
if (rowIter.hasNext()) {
entry.col = nextCol;
return true;
}
}
}
return false;
}
