question: public static double [ ] pageRank ( MatrixInterface preparedMatrix , int maxIteration ) { double [ ] init = new double [ preparedMatrix . getRowsCount ( ) ] ; for ( int i = 0 ; i != init . length ; i ++ ) init [ i ] = 1.0 ; return pageRank ( preparedMatrix , maxIteration , DEFAULT_D , init ) ; }
target:  Call prepareMatrix or prepareSparseMatrix first