question: private void initOverallStatsForAllIntervals ( ) { m_overallStatsForAllIntervals = new OverallStats [ m_subIntervalSizeList . length ] ; for ( int i = 0 ; i < m_subIntervalSizeList . length ; i ++ ) { final short subIntervalSize = m_subIntervalSizeList [ i ] ; m_overallStatsForAllIntervals [ i ] = new OverallStats ( subIntervalSize ) ; } }
target:  Initialize the overallStats for all interval size.  If overallStats array already  exist, it will be overwritten.