posted 11 years ago
Here's one way: Start with an even or odd (0 or 1), depending on what you want. Then instead of incrementing by one using i++, increment by two using i+=2.
Here's another way: Increment i as before. Then int odd = (2*i) + 1.
[ April 11, 2006: Message edited by: marc weber ]
Here's another way: Increment i as before. Then int odd = (2*i) + 1.
[ April 11, 2006: Message edited by: marc weber ]
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apollo abel
Ranch Hand
Posts: 32
posted 11 years ago
this is what i got:
Enter a number:
28
The perfect numbers are: 6
The perfect numbers are: 28
The Abundant numbers are: 14
The Abundant numbers are: 20
The Abundant numbers are: 26
though i need the odd numbers
thanks for the support
EDIT: actually thats an error, 14 is not an abundant number, the factors of 14(not counting the number itself) are 2+7=9<i, and it needs to be >i
[ April 11, 2006: Message edited by: apollo abel ]
this is what i got:
Enter a number:
28
The perfect numbers are: 6
The perfect numbers are: 28
The Abundant numbers are: 14
The Abundant numbers are: 20
The Abundant numbers are: 26
though i need the odd numbers
thanks for the support
EDIT: actually thats an error, 14 is not an abundant number, the factors of 14(not counting the number itself) are 2+7=9<i, and it needs to be >i
[ April 11, 2006: Message edited by: apollo abel ]
apollo abel
Ranch Hand
Posts: 32
posted 11 years ago
well this is what i ended up with:
What is your name?
neo
Enter a number:
5000
6: Perfect number
28: Perfect number
496: Perfect number
945: Odd abundant number
1575: Odd abundant number
2205: Odd abundant number
2835: Odd abundant number
3465: Odd abundant number
4095: Odd abundant number
4725: Odd abundant number
do you guys thing the answer is right??
What is your name?
neo
Enter a number:
5000
6: Perfect number
28: Perfect number
496: Perfect number
945: Odd abundant number
1575: Odd abundant number
2205: Odd abundant number
2835: Odd abundant number
3465: Odd abundant number
4095: Odd abundant number
4725: Odd abundant number
do you guys thing the answer is right??
posted 11 years ago
Well, it found the 3 perfect numbers in that range (the 4th isn't until 8128). And it found the first abundant odd number, 945, as well as odd multiples of 945 within range, 2835 and 4725. So the results look plausible.
The real questions are:
How confident are you in your algorithm? Do you have a way to verify test results? (If this page is accurate, there are 2487 abundant numbers below 10,000. You might try using your code to count these, and see if you get the same result.)
[ April 11, 2006: Message edited by: marc weber ]
Originally posted by apollo abel:
...do you guys thing the answer is right??
Well, it found the 3 perfect numbers in that range (the 4th isn't until 8128). And it found the first abundant odd number, 945, as well as odd multiples of 945 within range, 2835 and 4725. So the results look plausible.
The real questions are:
[ April 11, 2006: Message edited by: marc weber ]
"We're kind of on the level of crossword puzzle writers... And no one ever goes to them and gives them an award." ~Joe Strummer
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