Driver program to test above function
public static void main ( String [ ] args ) { String arr [ ] = { " geeksforgeeks " , " geeks " , " geek " , " geezer " } ; int n = arr . length ; String ans = commonPrefix ( arr , n ) ; if ( ans . length ( ) > 0 ) { System . out . printf ( " The ▁ longest ▁ common ▁ prefix ▁ is ▁ - ▁ % s " , ans ) ; } else { System . out . printf ( " There ▁ is ▁ no ▁ common ▁ prefix " ) ; } } }