private static String normalize ( String s ) {
  s = s . toUpperCase ( ) ;
  s = s . replace ( 'O' , '0' ) ;
  s = s . replace ( 'L' , '1' ) ;
  s = s . replace ( 'I' , '1' ) ;
  return s ;
}

private static String normalize ( String s ) { s = s . toUpperCase ( ) ; s = s . replace ( ' O ' , '0' ) ; s = s . replace ( ' L ' , '1' ) ; s = s . replace ( ' I ' , '1' ) ; return s ; }
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