Driver code
public static void main ( String [ ] args ) { for ( int i = 0 ; i < 1000 ; i ++ ) for ( int j = 0 ; j < 1000 ; j ++ ) dp [ i ] [ j ] = - 1 ; n = str . length ( ) ; System . out . println ( " Total ▁ palindromic ▁ subsequence " + " are ▁ : ▁ " + countPS ( 0 , n - 1 ) ) ; } }