※ 引述《raymondlea (看屁阿!!!)》之铭言： : Q1.Use the following sample data to trace your program step-by-step. : 13,20,5,8,97,16,80,27,32,45 不懂 : Q2.Write a Quick sort program to process a given setof data with N elements 欢迎爱用 Ruby, ptt 有看板 def qsort a case p = a[0] when nil then [] else qsort(a.select{|i|i<p}) + a.select{|i|i==p} + qsort(a.select{|i|i>p}) end end : Q3.Write down a computer program, in any programming language , which can : (a)Read in data file of 1000 items from a secondary storage. 第二个储存装置是指什麽？ : (b)Have these items be sorted in descreasing order. a = read_from_secondary_storage.sort{|l,r|r<=>l} : (c)Store the sorted data into the secondary storage. save_to_secondary_storage a : (d)Describe and analyze your approach. 就把顺序反过来就好 : Q4.Write a computer program , in any programming language , that can : (a)Read a set of data from a data file named "test.dat". : (b)Count the number of each digit in the set of extraced data. 欢迎爱用 Ruby, ptt 有看板 h = Hash.new 0 File.open('test.dat'){|f| f.each_byte{|b|h[b-48]+=1} } : Give brief comments about your method. 不懂 test.dat 内资料是什麽，假设是一串数字 : Q5.Write a program, in any programming language or pseudo codes , that can : read in an English text file "text950312.dat"from data of this drive A. : (a)Number of characters in this file. : (b)Number of words in this file. : (c)Number of lines in this file. 欢迎爱用 Ruby, ptt 有看板 c, w, l = Array.new(3, 0) File.open('text950312.dat'){|f| f.each_line{|ll| c += ll.size w += ll.scan(/\w+/).size l += 1 # L 和 1 长得好像 } } : write down proper comments in your program. 字元数：算长度 字　数：regex \w+ 行　数：算断行 : 其实我不太清楚难易度是怎样，因为研究所考计概时常会出这一类的题型，而我又没程式 : 基础，只是因为考的科系多考一科计概，只好硬着头皮上去考罗 XD : 希望能有程式强者解救我一下，不管会哪一题都可以，我只想先把答案硬记下来， : 有时间在自己摸索看看，在此先谢谢罗！！！ : 我也可以献出所有的P币来当作一点点的奖赏（虽然真的很少..就当是一点心意罗） 程式码要背应该不太容易，还是欢迎来 ptt Ruby 板 XD -- #!/usr/bin/ruby [露比] /Programming (Kn|N)ight/ 看板《Ruby》 # if a dog nailed extra legs that http://webptt.com/cn.aspx?n=bbs/Ruby/index.html # walks like an octopus, and Welcome ~Ruby@ptt~ # talks like an octopus, then ◢█◣ http://www.ruby-lang.org/ # we are happy to treat it as █ http://www.ruby-doc.org/ # if it were an octopus. ◥ ◤ http://www.rubyforge.org/ --

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