This is a small program I wrote to help playing the web game
wordle. It is written in C++, and run perfectly on linux (should also
compile and work on other inferior platforms).

To compile (on linux), you would need g++ installed and make. Doing
make (from the command line) would create the executable. Running the
program with no parameters generates a list of recommended works to use
as a first word:

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$ ./wordle_advisor 
01: ORATE     score: 7523
02: AROSE     score: 7523
...
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You can also specify the information you were given so far for your
answers. For example:

$ ./wordle_advisor  '-O@R@A-T-E' '-B@R@A-I+N'

Specfy that two words were tried to so far (ORATE and BRAIN). Here the
prefix characteers have the following meaning:

-: This letter does NOT appear in the answer (black background).

+: This letter does appear in the answer (yellow background), but not
   in this location.

@: This letter appears in the answer in this location (green background).

The program returns again a list of words that comply with these
constraints sorted in decreasing order by score. For example:

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  ./wordle_advisor  '-O@R@A-T-E' '-B@R@A-I+N'
pattern : -O@R@A-T-E
pattern : -B@R@A-I+N
01: CRANK     score: 27
02: DRANK     score: 27
03: FRANK     score: 27
04: PRANK     score: 27
05: FRANC     score: 25
06: GRAND     score: 25
07: PRANG     score: 25
-------------------------------------------------------------------

The program works as follows. It downloads a list of words from the
file words_5.txt. It then create a word list of all the words that
comply with the patterns provided. It then computes the character
frequency of all the words in this word list. The score of a word its
the total sum of the frequence of its letters. This is a pretty naive
strategy, and it might be interesting to develope a more sophisticated
strategy later on. In any case, it provides you with a quick candidate
list of words that you might try...

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BTW, the list of words this program use (words_5.txt) seems to be
somewhat larger than the one used by wordle, so you might get
suggested words that it would not accept.

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