Driver Code
public static void main ( String [ ] args ) { int arr [ ] = { 1 , - 4 , 3 , - 6 , 7 , 0 } ; int n = arr . length ; int max = maxProduct ( arr , n ) ; if ( max == - 1 ) System . out . println ( " No ▁ Quadruple ▁ Exists " ) ; else System . out . println ( " Maximum ▁ product ▁ is ▁ " + max ) ; } }