Re: Five Ways to Reverse a String of Words (C#, Perl 5, Perl 6, Ruby, Haskell) (a Java 1.5 version)

[IulianU]

in reply to Five Ways to Reverse a String of Words (C#, Perl 5, Perl 6, Ruby, Haskell)

public static String reverseWords( String src ) {
  List<String> pcs = Arrays.asList( src.split("\\s+") );
  Collections.reverse( pcs );
  StringBuffer result = new StringBuffer();
  for( String pc : pcs )
    result.append(" ").append(pc);
  return result.substring(1);
}

[IulianU]

Of course the above is broken :) It appends a trailing empty space. There are two ways to fix it: 1) return result.toString().trim(); instead of return result.substring(1); 2) filter out zero-length pieces in the for loop with something like if( pc.length() == 0 )