Best of Ruby Quiz Pragmatic programmers phần 9 docx

... need to solve the quiz. How do we “learn” the game? Let’s look to history for the answer. The History of MENACE This quiz was inspired by the research of Donald Michie. In 196 1 he built a “machine” ... num) op num) op num) A tricky example posted to Ruby Talk by daz, "Target: 92 6, Source: 75, 2, 8, 5, 10, 10," shows off the folly of this approach. The only answer is t...

Ngày tải lên: 12/08/2014, 09:21

... online, 13, 59 Discussion 1-800-THE -QUIZ, 153–1 59 Amazing Mazes, 214–224 Animal Quiz, 81–88 Banned Words, 191 – 194 Barrel of Monkeys, 203–213 Code Cleaning, 183– 190 Countdown, 2 39 248 Crosswords, ... the Pragmatic Program- mers wi l l be there with more titles and products to help programmers stay on top of their game. Visit Us O nline Best of Ruby Quiz pragmaticprog...

Ngày tải lên: 12/08/2014, 09:21

... and http://rubyquiz.com/madlibs/Gift_Giving.madlib Report erratum QUIZ 9. ROCK PAPER SCISSORS 20 Quiz 9 Answer on page 121 Rock Paper Scissors Generals, break out your copies of The Art of War[Tzu05], ... CGI-based solution at the Ruby Quiz site. 5 You can find the two Mad Libs files I’m using on the Ruby Quiz site as well. 6 5 http://rubyquiz.com/cgi-bin/madlib.cgi 6 http://...

Ngày tải lên: 12/08/2014, 09:20

... make the best five-card hand from a total of seven cards (five shared among all players): Kc 9s Ks Kd 9d 3c 6d 9c Ah Ks Kd 9d 3c 6d Ac Qc Ks Kd 9d 3c 9h 5s 4d 2d Ks Kd 9d 3c 6d 7s Ts Ks Kd 9d Each ... are at the front of the listing. That gives us the following for our sample hand: Kd Ks Kc 9d 9s 6d 3c Full House (Winner) Ks Kd 9d 9c Ah 6d 3c Two Pair Ac Qc Ks Kd 9d 3c 9h 5s Kd 9d 6d 4d 2...

Ngày tải lên: 12/08/2014, 09:20

... written in Ruby. You can learn more at http://www.rubyonrails.org/. 21 ERB is eRuby’s pure -Ruby cousin. eRuby is written in C and stands for “embedded Ruby. ” 22 You can learn about ERB’s other features ... sport programmers sometimes engage in to code a solution in a minimal amount of keystrokes. They will often use surprising code constructs, as long as it shaves off a few character...

Ngày tải lên: 12/08/2014, 09:20

... @level.index(/@|\+/) return pos % 19, pos / 19 end def [](x, y) @level[x + y * 19] end def []=(x, y, v) @level[x + y * 19] = v end def to_s (0 16).map {|i| @level[i * 19, 19] }.join("\n") end end levels ... /^(?:[123]\d{3}|[1 -9] \d{0,2})$/ That first Regexp is a validator for the Roman let ter combinations we accept, split up by powers of ten. The second Regexp is a pattern to m...

Ngày tải lên: 12/08/2014, 09:21

... fruits of our labor. A caller of this method provides a phone number and receives ready-to-print w ord replacements. Here’s the last bit of code that implements the quiz interface: 1_800_the _quiz/ phone_words.rb if ... the quiz itself already gave us a handful of test cases. Testing a Cipher The first part of the quiz describes encryption and decryption, so I started by yankin...

Ngày tải lên: 12/08/2014, 09:21

... am: code_cleaning/p2p_clean.rb #!/usr/local/bin /ruby # # p2p.rb # # Server: ruby p2p.rb password server public-uri private-uri merge-servers # Sample: ruby p2p.rb foobar server druby://123.123.123.123:1337 # druby://:1337 druby://foo.bar:1337 # ... a run: The alphabetically first number (1 -99 9) is: eight The first non-empty degree word (10**3-10**100) is: billion The next first word (...

Ngày tải lên: 12/08/2014, 09:21

... in order of value. That is, from top to bottom, we’ll always start with the following deck: Ace of clubs to King of clubs Ace of diamonds to King of diamonds Ace of hearts to King of hearts Ace ... (Consider the deck Report erratum QUIZ 4. ANIMAL QUIZ 11 Quiz 4 Answer on page 81 Animal Quiz Posed by Jim Weirich Here’s an animal quiz progr am to try as a Ruby Q...

Ngày tải lên: 06/03/2014, 10:20

... piece of the puzzle, generating th e keystream letters. Report erratum QUIZ 4. ANIMAL QUIZ 11 Quiz 4 Answer on page 81 Animal Quiz Posed by Jim Weirich Here’s an animal quiz progr am to try as a Ruby ... work with someday. The set of weekly programming challenges for the Ruby programming language called Ruby Quiz 2 was born out of my desire to share this with the rest...

Ngày tải lên: 27/06/2014, 09:20