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Printing all 'case' variations of a word

 
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# 1  
Old 04-15-2012
Printing all 'case' variations of a word
Hey Guys & Gals,

I am trying to figure out how one would go about printing all
possible variations of letter cases in a given word.

So if for instance given the input "test123"
output would be ;
Code:
test123
Test123
TEst123
TESt123
TEST123
tEst123
tESt123
tEST123
teSt123
teST123
tesT123

etc. etc. until all case variations of 'test' have been printed.

Any pointers on the correct way to move forward greatly appreciated !
# 2  
Old 04-15-2012
Perhaps this pseudocode might be a good approach:
Code:
convert string to lowercase
while there is a lowercase character in string
do
  for every character in the string 
  do
    if current character is in [[:alpha:]]
      if current character is upper then 
        convert to lower 
      else
        convert to upper
        break
      fi
    fi
  done
done

 
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