Moving through a vector

Question

Help
I have retrieved the data below from a database and stored into a vector. (each row is stored into an array and in turn each row is stored into a vector). Now I have to show this data quarterly (add january, feb and mar into one quarter and so on.. I am having problems moving through this vector. Any help is appreciated.
Sue
Year Period Labor Force Employment Unemployment Unemployment Rate
1998 January 3,423 3,249 174 5.10
1998 February 3,379 3,199 180 5.30
1998 March 3,390 3,225 165 4.90
1998 April 3,398 3,244 154 4.50
1998 May 3,455 3,326 129 3.70
1998 June 3,564 3,403 161 4.50
1998 July 3,617 3,479 138 3.80
1998 August 3,629 3,489 140 3.90
1998 September 3,546 3,410 136 3.80
1998 October 3,574 3,409 165 4.60
1998 November 3,561 3,368 193 5.40
1998 December 3,476 3,298 178 5.10
1998 Annual Average 3,501 3,342 159 4.50

Answer 1

Here's is some pseudocode that might help. Of course, I did this quickly so, there might be a few syntax errors, etc. but you should be able to get the general idea. This might not be the most efficient way either, but it's the first thing I thought of.
    Vector data; //your vector of arrays
    Vector quarterData = new Vector(); //vector of vectors for storing data totals for all 4 quarters
    for (int q = 0 ; q < data.size(); q +=3 )
        int laborTotal = 0;
        int empTotal = 0;
        int unempTotal = 0;
        int unempRateTotal = 0;
        int unempRateAvg = 0;
        int startindex = q;
        int stopindex = q + 3;
        Vector thisQuarterData = new Vector(); //vector of totals for this quarter (will be added to Vector quarterData)
        //loop through each array for this quarter
        while ( startindex < stopindex )
            //access appropriate arrays in Vector data using the startindex as index
            //add values to quarterTotals
            //i.e. go through array and add to totals
            startindex++;
        unempRateAvg = unempRateTotal/3; //find quarter average
        //add totals to this quarters data vector
        thisQuarterData.add(laborTotal);
        thisQuarterData.add(empTotal);
        thisQuarterData.add(unempTotal);
        thisQuarterData.add(unempRateAvg);
        quarterData.add(thisQuarterData);
    }You will then have all of your quarterly data in the Vector quarterData which you can then loop through and output.
Hope this helps,
--Nicole