private static String[] makeLines(int n){
  String[] ret=new String[n];
  for (int i=0; i < n; ++i) {
    ret[i]="word" + i;
  }
  return ret;
}

private static String [ ] makeLines ( int n ) { String [ ] ret = new String [ n ] ; for ( int i = 0 ; i < n ; ++ i ) { ret [ i ] = "word" + i ; } return ret ; }
helper to make an array of compressible strings . returns [ " word " i ] for i in range ( 0 , n ) .
