i is smart!
<p>i is smart!</p>
Since I was at a presentation during lunch, I took some time for myself and took a quick crack at Dustin Diaz's "programming brain teaser":http://www.dustindiaz.com/programming-brain-teaser/. He said any language, so the quickest to get running for me is Ruby (and <code>Command-R</code> in Textmate is so easy).
It's not terribly clever, but it takes a different approach from some of the other solutions in that it modifies the array elements then just joins them, instead of creating a single output string and concatenating as time goes. My favorite solution in the comments used a regular expression, which I thought was particularly clever. Anyway, here's mine:
<pre><code class="ruby">
# the array
arr = ['a', 'b', 'c', 'c', 'd', 'e', 'e',
'e', 'e', 'e', 'f', 'e', 'f', 'e',
'f', 'a', 'a', 'a', 'f', 'f', 'f']
# some variables
count = 0
arr.each_index do |i|
# not the same as previous letter, so do some things
if i > 0 && arr[i] != arr[i-1]
if count > 2
arr[i-1] = arr[i-1] + "</span>"
arr[i-count+2] = "<span>" + arr[i-count+2]
end
count = 0
put_tag = false
end
# increment count
count += 1
end
if count > 2
arr[-1] = arr[-1] + "</span>"
arr[-count+2] = "<span>" + arr[-count+2]
end
puts arr.join(" ")
</code></pre>
Thinking back, I should have gone for some JavaScript, since that's mostly what I'm writing these days. Oh well.
<p>Since I was at a presentation during lunch, I took some time for myself and took a quick crack at Dustin Diaz’s <a href="http://www.dustindiaz.com/programming-brain-teaser/">programming brain teaser</a>. He said any language, so the quickest to get running for me is Ruby (and <code>Command-R</code> in Textmate is so easy).</p>
<p>It’s not terribly clever, but it takes a different approach from some of the other solutions in that it modifies the array elements then just joins them, instead of creating a single output string and concatenating as time goes. My favorite solution in the comments used a regular expression, which I thought was particularly clever. Anyway, here’s mine:</p>
<pre><code class="ruby">
# the array
arr = ['a', 'b', 'c', 'c', 'd', 'e', 'e',
'e', 'e', 'e', 'f', 'e', 'f', 'e',
'f', 'a', 'a', 'a', 'f', 'f', 'f']
# some variables
count = 0
arr.each_index do |i|
# not the same as previous letter, so do some things
if i > 0 && arr[i] != arr[i-1]
if count > 2
arr[i-1] = arr[i-1] + "</span>"
arr[i-count+2] = "<span>" + arr[i-count+2]
end
count = 0
put_tag = false
end
# increment count
count += 1
end
if count > 2
arr[-1] = arr[-1] + "</span>"
arr[-count+2] = "<span>" + arr[-count+2]
end
puts arr.join(" ")
</code></pre>
<p>Thinking back, I should have gone for some JavaScript, since that’s mostly what I’m writing these days. Oh well.</p>
2008-07-09T14:32:51-07:00
6
programming_brain_teaser
true
2008-07-09T14:32:00-07:00
Programming Brain Teaser
2008-07-14T13:18:07-07:00