Driver program to test the above function
public static void main ( String [ ] args ) { SmallestMissing small = new SmallestMissing ( ) ; int arr [ ] = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 10 } ; int n = arr . length ; System . out . println ( " First ▁ Missing ▁ element ▁ is ▁ : ▁ " + small . findFirstMissing ( arr , 0 , n - 1 ) ) ; } }