Driver code
public static void main ( String [ ] args ) { int arr [ ] = { 1 , 1 , 1 , 1 , 0 , 0 , 0 } ; int n = arr . length ; System . out . println ( " Count ▁ of ▁ 1 ' s ▁ in ▁ given ▁ array ▁ is ▁ " + countOnes ( arr , n ) ) ; } }