Driver Program
public static void main ( String [ ] args ) { int n = 20 ; if ( n == 0 ) System . out . print ( "Minimum number of Steps: 0 Step sequence : 0 "); else { Vector < Integer > a = find ( n ) ; System . out . print ( " Minimum ▁ number ▁ of ▁ Steps : ▁ " + a . size ( ) + " Step sequence : "); for ( int i : a ) System . out . print ( i + " ▁ " ) ; } } }