week 3 exercises

test.rb

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+Created by Satish
+Thank God!

text.txt

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+Among other public buildings in a certain town, which for many 
+reasons it will be prudent to refrain from mentioning, and to 
+which I will assign no fictitious name, there is one anciently 
+common to most towns, great or small: to wit, a workhouse; and 
+in this workhouse was born; on a day and date which I need not 
+trouble myself to repeat, inasmuch as it can be of no possible 
+consequence to the reader, in this stage of the business at all 
+events; the item of mortality whose name is prefixed to the head 
+of this chapter. 
+
+For a long time after it was ushered into this world of sorrow 
+and trouble, by the parish surgeon, it remained a matter of 
+considerable doubt whether the child would survive to bear any 
+name at all; in which case it is somewhat more than probable that 
+these memoirs would never have appeared; or, if they had, that 
+being comprised within a couple of pages, they would have 
+possessed the inestimable merit of being the most concise and 
+faithful specimen of biography, extant in the literature of any 
+age or country. 
+
+Although I am not disposed to maintain that the being born in a 
+workhouse, is in itself the most fortunate and enviable 
+circumstance that can possibly befall a human being, I do mean to 
+say that in this particular instance, it was the best thing for 
+Oliver Twist that could by possibility have occurred. The fact 
+is, that there was considerable difficulty in inducing Oliver to 
+take upon himself the office of respiration,--a troublesome 
+practice, but one which custom has rendered necessary to our easy 
+existence; and for some time he lay gasping on a little flock 
+mattress, rather unequally poised between this world and the 
+next: the balance being decidedly in favour of the latter. Now, 
+if, during this brief period, Oliver had been surrounded by 
+careful grandmothers, anxious aunts, experienced nurses, and 
+doctors of profound wisdom, he would most inevitably and 
+indubitably have been killed in no time. There being nobody by, 
+however, but a pauper old woman, who was rendered rather misty by 
+an unwonted allowance of beer; and a parish surgeon who did such 
+matters by contract; Oliver and Nature fought out the point 
+between them. The result was, that, after a few struggles, 
+Oliver breathed, sneezed, and proceeded to advertise to the 
+inmates of the workhouse the fact of a new burden having been 
+imposed upon the parish, by setting up as loud a cry as could 
+reasonably have been expected from a male infant who had not been 
+possessed of that very useful appendage, a voice, for a much 
+longer space of time than three minutes and a quarter. 
+
+As Oliver gave this first proof of the free and proper action of 
+his lungs, the patchwork coverlet which was carelessly flung over 
+the iron bedstead, rustled; the pale face of a young woman was 
+raised feebly from the pillow; and a faint voice imperfectly 
+articulated the words, 'Let me see the child, and die.' 
+
+The surgeon had been sitting with his face turned towards the 
+fire: giving the palms of his hands a warm and a rub 
+alternately. As the young woman spoke, he rose, and advancing to 
+the bed's head, said, with more kindness than might have been 
+expected of him: 
+
+'Oh, you must not talk about dying yet.' 
+
+'Lor bless her dear heart, no!' interposed the nurse, hastily 
+depositing in her pocket a green glass bottle, the contents of 
+which she had been tasting in a corner with evident satisfaction. 
+
+'Lor bless her dear heart, when she has lived as long as I have, 
+sir, and had thirteen children of her own, and all on 'em dead 
+except two, and them in the wurkus with me, she'll know better 
+than to take on in that way, bless her dear heart! Think what it 
+is to be a mother, there's a dear young lamb do.' 
+
+Apparently this consolatory perspective of a mother's prospects 
+failed in producing its due effect. The patient shook her head, 
+and stretched out her hand towards the child. 
+
+The surgeon deposited it in her arms. She imprinted her cold 
+white lips passionately on its forehead; passed her hands over 
+her face; gazed wildly round; shuddered; fell back--and died. 
+They chafed her breast, hands, and temples; but the blood had 
+stopped forever. They talked of hope and comfort. They had been 
+strangers too long. 
+
+'It's all over, Mrs. Thingummy!' said the surgeon at last. 
+
+'Ah, poor dear, so it is!' said the nurse, picking up the cork of 
+the green bottle, which had fallen out on the pillow, as she 
+stooped to take up the child. 'Poor dear!' 
+
+'You needn't mind sending up to me, if the child cries, nurse,' 
+said the surgeon, putting on his gloves with great deliberation. 
+'It's very likely it WILL be troublesome. Give it a little gruel 
+if it is.' He put on his hat, and, pausing by the bed-side on 
+his way to the door, added, 'She was a good-looking girl, too; 
+where did she come from?' 
+
+'She was brought here last night,' replied the old woman, 'by the 
+overseer's order. She was found lying in the street. She had 
+walked some distance, for her shoes were worn to pieces; but 
+where she came from, or where she was going to, nobody knows.' 
+
+The surgeon leaned over the body, and raised the left hand. 'The 
+old story,' he said, shaking his head: 'no wedding-ring, I see. 
+Ah! Good-night!' 
+
+The medical gentleman walked away to dinner; and the nurse, 
+having once more applied herself to the green bottle, sat down on 
+a low chair before the fire, and proceeded to dress the infant. 
+
+What an excellent example of the power of dress, young Oliver 
+Twist was! Wrapped in the blanket which had hitherto formed his 
+only covering, he might have been the child of a nobleman or a 
+beggar; it would have been hard for the haughtiest stranger to 
+have assigned him his proper station in society. But now that he 
+was enveloped in the old calico robes which had grown yellow in 
+the same service, he was badged and ticketed, and fell into his 
+place at once--a parish child--the orphan of a workhouse--the 
+humble, half-starved drudge--to be cuffed and buffeted through 
+the world--despised by all, and pitied by none. 
+
+Oliver cried lustily. If he could have known that he was an 
+orphan, left to the tender mercies of church-wardens and 
+overseers, perhaps he would have cried the louder.

text2.txt

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+I love my dog. Go. How are you?
+
+I love you.

tmp.rb

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+f = ARGV[0]
+puts f

w2ex3retry.rb

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+def leap_year(year)
+  if year%4==0
+    if year%100==0
+      if year%400==0
+        leap_year = true
+      else
+        leap_year = false
+      end
+    else
+      leap_year = true
+    end
+  else
+    leap_year = false
+  end
+  if leap_year == true
+    yield(366*24*60, leap_year)
+  else
+    yield(365*24*60, leap_year)  
+  end
+end
+puts"Enter a year and I will tell you if it's a leap year"
+print"? "
+STDOUT.flush
+year = gets.to_i
+leap_year(year) {|minutes, leap_year|
+  if leap_year == true
+    puts "#{year} is a leap year."
+    puts "There are #{minutes} minutes in a leap year."
+  else
+    puts "#{year} is not a leap year"
+    puts "There are #{minutes} minutes in a non leap year."
+  end
+}

w3ex10.rb

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+collection = [1,2,3,4,5]
+sum = 0
+collection.each do |x|
+  sum += x
+end
+
+puts sum

w3ex2.rb

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+print "Enter the file to be evaluated: > "
+file = gets.chomp
+
+replacement_file = ""
+
+File.open(file, 'r') do |f|
+  while line = f.gets
+   line["word"] = "inserted word" if line.include?("word")
+   replacement_file << line   
+  end
+end
+
+File.open(file, 'w') do |f|
+  f.puts replacement_file
+end
+
+
+
+

w3ex3.rb

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+#Displays the current working directory
+original_directory = Dir.getwd
+puts original_directory
+
+#Creates new directory called tmp
+Dir.mkdir('tmp')
+
+#Changes the directory to tmp
+Dir.chdir('tmp')
+
+#Displays the current working directory
+puts Dir.getwd
+
+#goes back to original wprking directory
+Dir.chdir(original_directory)
+puts Dir.getwd
+
+#delete the tmp directory
+Dir.delete('tmp')

w3ex5.rb

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+
+s = 'key=value'
+s1, s2 = s.split('=')
+puts s1
+puts s2

w3ex6.rb

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+
+you_say = ""
+
+until you_say == "BYE"
+
+  print "You say to Grandma > "
+  you_say = gets.chomp
+
+  if you_say != you_say.upcase
+    puts "HUH?! SPEAK UP, SONNY"
+  elsif you_say != "BYE"
+    puts "NO, NOT SINCE #{rand(1938...1950)}"
+  end
+end
+
+puts "Grandma walks away."

w3ex7.rb

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+line_count = 0
+
+File.open('text.txt') do |f|
+  while line = f.gets
+    line_count += 1
+  end
+end
+
+
+new_file = File.read('text.txt')
+puts new_file.class
+
+character_count = new_file.scan(/./).size
+character_count_wo_spaces = (character_count) - (new_file.count " ")
+
+word_count = new_file.scan(/\w+/).size 
+sentence_count = new_file.scan(/((?<=[a-z0-9)][.?!])|(?<=[a-z0-9][.?!]"))\s+(?="?[A-Z])/).size
+paragraph_count = new_file.scan(/\n\n/).size
+
+average_num_words_per_sentence = word_count.to_f / sentence_count
+average_num_sentences_per_paragraph = sentence_count.to_f / paragraph_count
+
+puts "There are #{character_count} characters in the file"
+puts "There are #{character_count_wo_spaces} characters not including spaces in the file"
+puts "There are #{line_count} lines in the file"
+puts "There are #{word_count} words in the file"
+puts "There are #{sentence_count} sentences in the file"
+puts "There are #{paragraph_count} paragraphs in the file"
+puts "There are an average of #{average_num_words_per_sentence} words per sentence in the file"
+puts "There are an average of #{average_num_sentences_per_paragraph} sentences per paragraph in the file"
+
+
+

w3ex8.rb

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+(1..100).each do |count|
+  output = ""
+  output = "Fizz" if count % 3 == 0
+  output += "Buzz" if count % 5 == 0
+  output = count if output == ""
+
+  puts output
+
+end

w3ex9.rb

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+def reverse_string_word_order(string)
+  words = []
+  words << string.split(" ")
+  reverse_string = ""
+  words[0].reverse_each { |x| reverse_string<< x + " "}
+  yield(reverse_string)
+
+end
+
+print "Enter a string: > "
+STDOUT.flush
+string = gets.chomp
+
+reverse_string_word_order(string){|reverse_string| puts reverse_string}
+

word.txt

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+test test test test test
+test test test test test
+test test test test test
+test test test test test
+test test test test test
+test test inserted inserted word test test
+test test test test test
+test test test test test
+test test test test test
+test test test test test
+
+test test test test test2
+
+hello