Method getNonZeroIterator

JSAT/src/jsat/linear/SparseVector.java:897–939

(final int start)

    }

    @Override
    public Iterator<IndexValue> getNonZeroIterator(final int start)
    {
        if(used <= 0)
            return Collections.EMPTY_LIST.iterator();
        final int startPos;
        if(start <= indexes[0])
            startPos = 0;
        else
        {
            int tmpIndx = Arrays.binarySearch(indexes, 0, used, start);
            if(tmpIndx >= 0)
                startPos = tmpIndx;
            else
                startPos = -(tmpIndx)-1;
        }
        Iterator<IndexValue> itor = new Iterator<IndexValue>() 
        {
            int curUsedPos = startPos;
            IndexValue indexValue = new IndexValue(-1, Double.NaN);
            
            @Override
            public boolean hasNext()
            {
                return curUsedPos < used;
            }

            @Override
            public IndexValue next()
            {
                indexValue.setIndex(indexes[curUsedPos]);
                indexValue.setValue(values[curUsedPos++]);
                return indexValue;
            }

            @Override
            public void remove()
            {
                throw new UnsupportedOperationException("Not supported yet.");
            }
        };
        return itor;
    }
    
    @Override
    public int hashCode()