what are you looking at?
This challenge has a picture containing an image mapped link. Under the picture is the question;
The link in the picture will bring you to a page containing the first part of an array, this;
a = [1, 11, 21, 1211, 111221,
The sequence isn’t too complicated, I learned it my first year back in college. When I saw it I had a pretty good idea how to solve it. It didn’t take me long to come up with this;
#!/usr/bin/ruby a, x = ['1'], 0 while x <= 30 b, y, z, n = '', a[x,1].to_s, 0, 1 while z <= y.length if y[z] == y[z+1] n, z = n+1, z+1 else b, n, z = b + n.to_s + y[z,1], 1, z+1 end a[(x+1),1] = b end x += 1 end puts "$a.length = " + a[30,1].to_s.length.to_s
There are plenty of shorter ways of doing this, using regex’s and such, but this is the that way made the most sense to me. With challenge 10 completed I am now in uncharted territory, and the next challenge has no hints in the source code or on the page only a title and a blurry image. Hmm, I sense more RMagick use ahead.
Next: challenge 11; odd even