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Letter combinations
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Join Date: May 2007
Posts: 81
Reputation: 
Solved Threads: 1
Junior Poster in Training
I want to ask if someone has already have an article or working algorithm where it can get all the combination possible in a given word.
Example: "ABCD"
possible combinations or arrangement without duplicates:
"ABCD"
"ABC"
"ABD"
"BCD"
"AB"
"AC"
"AD"
"BC"
"CA" <--- is the same as "AC"
"CBA" <--- is the same as "ABC" or "BCA"
"BD"
Example: "ABCD"
possible combinations or arrangement without duplicates:
"ABCD"
"ABC"
"ABD"
"BCD"
"AB"
"AC"
"AD"
"BC"
"CA" <--- is the same as "AC"
"CBA" <--- is the same as "ABC" or "BCA"
"BD"
If you sorted them into alphabetical order you'd be able to tell if they were the same or not.
eg
ABA gets sorted to AAB
eg
ABA gets sorted to AAB
Did I just hear "You gotta help us, Doc. We've tried nothin' and we're all out of ideas" ? Is this you? Dont let this be you! I will put in as much effort as you seem to.
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Join Date: Oct 2008
Posts: 1,985
Reputation: 
Solved Threads: 289
To find all the combinations of say words of 3 letters from a word of 4 cannot be that difficult. To exclude the "identicals" I would sum their ASCII-char values of a word and test if they are the same.
Today is a gift, that's why it is called "The Present".
Make love, no war. Cave ab homine unius libri.
Danny
Make love, no war. Cave ab homine unius libri.
Danny
That might not necessarily work.
AED would = BCF
33+37+36 = 106
34+35+37 = 106
Only true way is to sort them and compare them.
AED would = BCF
33+37+36 = 106
34+35+37 = 106
Only true way is to sort them and compare them.
Did I just hear "You gotta help us, Doc. We've tried nothin' and we're all out of ideas" ? Is this you? Dont let this be you! I will put in as much effort as you seem to.
•
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Join Date: Oct 2008
Posts: 1,985
Reputation:
Solved Threads: 289
You are quite right LizR! The minute I sent it I knew I was wrong.
But btw. your example to prove it looks a little weird(ASCII code for A=65,B=66 etc.)
But btw. your example to prove it looks a little weird(ASCII code for A=65,B=66 etc.)
Today is a gift, that's why it is called "The Present".
Make love, no war. Cave ab homine unius libri.
Danny
Make love, no war. Cave ab homine unius libri.
Danny
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