PageRange[] ComputeWrittenPageRanges(SparseIntArray writtenPages)
{
var pageRanges = new List <PageRange> ();
int start = -1;
int end = -1;
int writtenPageCount = writtenPages.Size();
for (int i = 0; i < writtenPageCount; i++)
{
if (start < 0)
{
start = writtenPages.ValueAt(i);
}
int oldEnd = end = start;
while (i < writtenPageCount && (end - oldEnd) <= 1)
{
oldEnd = end;
end = writtenPages.ValueAt(i);
i++;
}
var pageRange = new PageRange(start, end);
pageRanges.Add(pageRange);
start = end = -1;
}
return(pageRanges.ToArray());
}