Hey, here is Problem 3. Not the most complicated problem. However, this version requires you to enter an argument in the command line.

#Project Euler

#Problem 3

require 'mathn'

usr_num = ARGV[0].to_i

puts usr_num.prime_division.last[0]

## Saturday, September 25, 2010

## Monday, September 20, 2010

### Project Euler 002

Hey, glad I got some followers. This is my response to the second one (check the link in the title of the post for the prompt). I recommend Project Euler as a way of jumping into Ruby, especially if you love Math.

#Project Euler

#Problem 2

a, b, sum = 1,2,0

while b < 4000000

sum += b if b.even?

a,b = b,a+b

end

puts sum

#Project Euler

#Problem 2

a, b, sum = 1,2,0

while b < 4000000

sum += b if b.even?

a,b = b,a+b

end

puts sum

## Sunday, September 19, 2010

### Project Euler 001

I have decided to use this blog to display the source code for Project Euler answers (and eventually other programming challenges as well). Enjoy!

#Project Euler

#Problem 1

x , total = 0,0

while x < 1000

total += x if x % 3 == 0 || x % 5 == 0

x+=1

end

range = 0..999

a = range.inject(0) do |sum,element|

element%3==0 || element%5==0 ? sum+element : sum

end

puts total

puts a

## Monday, September 6, 2010

### Post #2!!!

Today I mailed some textbooks I sold on eBay. It was so nice to make back a little money considering how much they cost new. Have any stories about your eBay experiences? Post them as comments!

Subscribe to:
Posts (Atom)