Driver code
public static void main ( String [ ] args ) { int n = 20 ; System . out . println ( " Count ▁ for ▁ " + n + " ▁ is ▁ " + count ( n ) ) ; n = 13 ; System . out . println ( " Count ▁ for ▁ " + n + " ▁ is ▁ " + count ( n ) ) ; } }