question: public static Matrix random ( int m , int n ) { Matrix A = new Matrix ( m , n ) ; double [ ] [ ] X = A . getArray ( ) ; for ( int i = 0 ; i < m ; i ++ ) { for ( int j = 0 ; j < n ; j ++ ) { X [ i ] [ j ] = Math . random ( ) ; } } return A ; }
target:  Generate matrix with random elements