Very simple programming exercises
in [Ruby]
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From: Lakshmanan Muthukrishnan on 7 Jun 2010 00:48 Hi, I am reading ruby from the book "Programming ruby" and that book lacks programming exercises. I want to work out some problems in ruby. Please point me towards a good resource on the net or it can be a book also. thanks -- Posted via http://www.ruby-forum.com/.
From: Ryan Davis on 7 Jun 2010 02:44 On Jun 6, 2010, at 21:48 , Lakshmanan Muthukrishnan wrote: > Hi, > > I am reading ruby from the book "Programming ruby" and that book lacks > programming exercises. I want to work out some problems in ruby. > > Please point me towards a good resource on the net or it can be a book > also. http://codekata.pragprog.com/
From: Josh Cheek on 7 Jun 2010 03:31 [Note: parts of this message were removed to make it a legal post.] On Sun, Jun 6, 2010 at 11:48 PM, Lakshmanan Muthukrishnan < lakshmanan(a)vinsol.com> wrote: > Hi, > > I am reading ruby from the book "Programming ruby" and that book lacks > programming exercises. I want to work out some problems in ruby. > > Please point me towards a good resource on the net or it can be a book > also. > > thanks > -- > Posted via http://www.ruby-forum.com/. > > Codingbat.com has lots of simple easy problems, but it's mostly Java and a little bit of Python. Still, you can solve the problem however you like, you just won't be able to use their automatic tester. There are also a bunch at spoj.pl but I found that site frustrating, because it's too dependent on string format of your output (a stray newline will invalidate your solution, but you aren't given enough feedback to figure out what formatting needs to change) And their time constraints are aimed at compiled languages, which frequently prevents Ruby from being a possibility. codechef.com is basically spoj.pl taken to the next level with a community and flashy design. But I have had a lot of trouble getting their Ruby to work right for me, and they don't keep track of which solutions you've previously solved, so you can't really make a goal of solving all the problems they have. I'll probably try it again in 6 months or so, see if they've made that stuff better. If you like math, projecteuler.net is a good choice, math problems whose scope is large enough that they usually require writing a program in order to solve them. Hardcore number crunching isn't a great domain for Ruby, though, and the problems get quite advanced pretty quickly. I maxed out at 140 solved. But the problem solving skills of math complement the problem solving skills of programming (imo, anyway). I found it very helpful for developing problem solving skills, and figuring out how to transform what I have into what I want. I'm teaching some friends Ruby, and took a bunch of problems from a lot of different places, they have automated tests that you can run locally, and solutions also. If you're interested, let me know, and I can put up installation instructions, so that you can try your hand at it. (you'll need to have git installed to get updates, or copy and paste a lot of files, I'm sort of building it as we go, there are 30 problems at present) Some examples of the challenges http://github.com/JoshCheek/JoshsRubyKickstart/blob/master/ch2/challenge/1_input_output.rb http://github.com/JoshCheek/JoshsRubyKickstart/blob/master/ch2/challenge/12_classes.rb http://github.com/JoshCheek/JoshsRubyKickstart/blob/master/ch3/challenge/3_hashes.rb There are also solutions included (though many do not have a single correct answer, and I try to keep the solutions within the scope of what we have covered together).
From: Lakshmanan Muthukrishnan on 7 Jun 2010 04:40 Josh Cheek wrote: > On Sun, Jun 6, 2010 at 11:48 PM, Lakshmanan Muthukrishnan < > lakshmanan(a)vinsol.com> wrote: > >> Posted via http://www.ruby-forum.com/. >> >> > Codingbat.com has lots of simple easy problems, but it's mostly Java and > a > little bit of Python. Still, you can solve the problem however you like, > you > just won't be able to use their automatic tester. > > There are also a bunch at spoj.pl but I found that site frustrating, > because > it's too dependent on string format of your output (a stray newline will > invalidate your solution, but you aren't given enough feedback to figure > out > what formatting needs to change) And their time constraints are aimed at > compiled languages, which frequently prevents Ruby from being a > possibility. > > codechef.com is basically spoj.pl taken to the next level with a > community > and flashy design. But I have had a lot of trouble getting their Ruby to > work right for me, and they don't keep track of which solutions you've > previously solved, so you can't really make a goal of solving all the > problems they have. I'll probably try it again in 6 months or so, see if > they've made that stuff better. ...... Thank you so much -- Posted via http://www.ruby-forum.com/.
From: Jacob Mitchell on 7 Jun 2010 07:35
[Note: parts of this message were removed to make it a legal post.] Search for "code golf". I personally have enjoyed http://golf.shinh.org/because the problems tend to be very simple. It helps you learn the pros and cons of various languages. -Jake On Mon, Jun 7, 2010 at 4:40 AM, Lakshmanan Muthukrishnan < lakshmanan(a)vinsol.com> wrote: > Josh Cheek wrote: > > On Sun, Jun 6, 2010 at 11:48 PM, Lakshmanan Muthukrishnan < > > lakshmanan(a)vinsol.com> wrote: > > > >> Posted via http://www.ruby-forum.com/. > >> > >> > > Codingbat.com has lots of simple easy problems, but it's mostly Java and > > a > > little bit of Python. Still, you can solve the problem however you like, > > you > > just won't be able to use their automatic tester. > > > > There are also a bunch at spoj.pl but I found that site frustrating, > > because > > it's too dependent on string format of your output (a stray newline will > > invalidate your solution, but you aren't given enough feedback to figure > > out > > what formatting needs to change) And their time constraints are aimed at > > compiled languages, which frequently prevents Ruby from being a > > possibility. > > > > codechef.com is basically spoj.pl taken to the next level with a > > community > > and flashy design. But I have had a lot of trouble getting their Ruby to > > work right for me, and they don't keep track of which solutions you've > > previously solved, so you can't really make a goal of solving all the > > problems they have. I'll probably try it again in 6 months or so, see if > > they've made that stuff better. > > > ...... > > Thank you so much > -- > Posted via http://www.ruby-forum.com/. > > |