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RoflanGenius
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Регистрация: 05.10.2018
Сообщений: 17
1

Ninety-nine bottles of beer

22.03.2019, 23:35. Просмотров 244. Ответов 0

"Ninety-nine bottles of beer..." Using englishNumber and your old program, write out the lyrics to this song the right way this time. Punish your computer: have it start at 9999. (Don't pick a number too large, though, because writing all of that to the screen takes your computer quite a while. A hundred thousand bottles of beer takes some time; and if you pick a million, you'll be punishing yourself as well!



Не представляю как можно справиться с этой простой задачей.

Вот программа englishNumber
Ruby
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def englishNumber number
  if number < 0  # No negative numbers.
    return 'Please enter a number that isn\'t negative.'
  end
  if number == 0
    return 'zero'
  end
 
  # No more special cases! No more returns!
 
  numString = ''  # This is the string we will return.
 
  onesPlace = ['one',     'two',       'three',    'four',     'five',
               'six',     'seven',     'eight',    'nine']
  tensPlace = ['ten',     'twenty',    'thirty',   'forty',    'fifty',
               'sixty',   'seventy',   'eighty',   'ninety']
  teenagers = ['eleven',  'twelve',    'thirteen', 'fourteen', 'fifteen',
               'sixteen', 'seventeen', 'eighteen', 'nineteen']
               left  = number
  write = left/1000000000000         # How many hundreds left to write out?
  left  = left - write*1000000000000 # Subtract off those hundreds.
 
  if write > 0
    # Now here's a really sly trick:
    trillion  = englishNumber write
    numString = numString + trillion + ' trillion'
    
 
    if left > 0
      # So we don't write 'two hundredfifty-one'...
      numString = numString + ' '
    end
  end
 
 
  write = left/1000000          # How many hundreds left to write out?
  left  = left - write*1000000  # Subtract off those hundreds.
 
  if write > 0
    # Now here's a really sly trick:
   million  = englishNumber write
    numString = numString + million + ' million'
    
 
    if left > 0
      # So we don't write 'two hundredfifty-one'...
      numString = numString + ' '
    end
  end
 
 
 
  
  write = left/1000          # How many hundreds left to write out?
  left  = left - write*1000  # Subtract off those hundreds.
 
  if write > 0
    # Now here's a really sly trick:
    thousands  = englishNumber write
    numString = numString + thousands + ' thousand'
    
 
    if left > 0
      # So we don't write 'two hundredfifty-one'...
      numString = numString + ' '
    end
  end
 
  # "left" is how much of the number we still have left to write out.
  # "write" is the part we are writing out right now.
  # write and left... get it?  :)
  
  write = left/100          # How many hundreds left to write out?
  left  = left - write*100  # Subtract off those hundreds.
 
  if write > 0
    # Now here's a really sly trick:
    hundreds  = englishNumber write
    numString = numString + hundreds + ' hundred'
    # That's called "recursion". So what did I just do?
    # I told this method to call itself, but with "write" instead of
    # "number". Remember that "write" is (at the moment) the number of
    # hundreds we have to write out. After we add "hundreds" to
    # "numString", we add the string ' hundred' after it.
    # So, for example, if we originally called englishNumber with
    # 1999 (so "number" = 1999), then at this point "write" would
    # be 19, and "left" would be 99. The laziest thing to do at this
    # point is to have englishNumber write out the 'nineteen' for us,
    # then we write out ' hundred', and then the rest of
    # englishNumber writes out 'ninety-nine'.
 
    if left > 0
      # So we don't write 'two hundredfifty-one'...
      numString = numString + ' '
    end
  end
 
 
  write = left/10          # How many tens left to write out?
  left  = left - write*10  # Subtract off those tens.
 
  if write > 0
    if ((write == 1) and (left > 0))
      # Since we can't write "tenty-two" instead of "twelve",
      # we have to make a special exception for these.
      numString = numString + teenagers[left-1]
      # The "-1" is because teenagers[3] is 'fourteen', not 'thirteen'.
 
      # Since we took care of the digit in the ones place already,
      # we have nothing left to write.
      left = 0
    else
      numString = numString + tensPlace[write-1]
      # The "-1" is because tensPlace[3] is 'forty', not 'thirty'.
    end
 
    if left > 0
      # So we don't write 'sixtyfour'...
      numString = numString + '-'
    end
  end
 
  write = left  # How many ones left to write out?
  left  = 0     # Subtract off those ones.
 
  if write > 0
    numString = numString + onesPlace[write-1]
    # The "-1" is because onesPlace[3] is 'four', not 'three'.
  end
 
  # Now we just return "numString"...
  numString
end
 
puts englishNumber(222213)
puts englishNumber(2213)
old program это, как я понимаю

Ruby
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77 bottles of beer on the wall, 77 bottles of beer.
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74 bottles of beer on the wall, 74 bottles of beer.
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71 bottles of beer on the wall, 71 bottles of beer.
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69 bottles of beer on the wall, 69 bottles of beer.
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64 bottles of beer on the wall, 64 bottles of beer.
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63 bottles of beer on the wall, 63 bottles of beer.
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60 bottles of beer on the wall, 60 bottles of beer.
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59 bottles of beer on the wall, 59 bottles of beer.
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58 bottles of beer on the wall, 58 bottles of beer.
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49 bottles of beer on the wall, 49 bottles of beer.
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48 bottles of beer on the wall, 48 bottles of beer.
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46 bottles of beer on the wall, 46 bottles of beer.
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44 bottles of beer on the wall, 44 bottles of beer.
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43 bottles of beer on the wall, 43 bottles of beer.
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42 bottles of beer on the wall, 42 bottles of beer.
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41 bottles of beer on the wall, 41 bottles of beer.
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40 bottles of beer on the wall, 40 bottles of beer.
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39 bottles of beer on the wall, 39 bottles of beer.
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38 bottles of beer on the wall, 38 bottles of beer.
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37 bottles of beer on the wall, 37 bottles of beer.
Take one down and pass it around, 36 bottles of beer on the wall.
 
36 bottles of beer on the wall, 36 bottles of beer.
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35 bottles of beer on the wall, 35 bottles of beer.
Take one down and pass it around, 34 bottles of beer on the wall.
 
34 bottles of beer on the wall, 34 bottles of beer.
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33 bottles of beer on the wall, 33 bottles of beer.
Take one down and pass it around, 32 bottles of beer on the wall.
 
32 bottles of beer on the wall, 32 bottles of beer.
Take one down and pass it around, 31 bottles of beer on the wall.
 
31 bottles of beer on the wall, 31 bottles of beer.
Take one down and pass it around, 30 bottles of beer on the wall.
 
30 bottles of beer on the wall, 30 bottles of beer.
Take one down and pass it around, 29 bottles of beer on the wall.
 
29 bottles of beer on the wall, 29 bottles of beer.
Take one down and pass it around, 28 bottles of beer on the wall.
 
28 bottles of beer on the wall, 28 bottles of beer.
Take one down and pass it around, 27 bottles of beer on the wall.
 
27 bottles of beer on the wall, 27 bottles of beer.
Take one down and pass it around, 26 bottles of beer on the wall.
 
26 bottles of beer on the wall, 26 bottles of beer.
Take one down and pass it around, 25 bottles of beer on the wall.
 
25 bottles of beer on the wall, 25 bottles of beer.
Take one down and pass it around, 24 bottles of beer on the wall.
 
24 bottles of beer on the wall, 24 bottles of beer.
Take one down and pass it around, 23 bottles of beer on the wall.
 
23 bottles of beer on the wall, 23 bottles of beer.
Take one down and pass it around, 22 bottles of beer on the wall.
 
22 bottles of beer on the wall, 22 bottles of beer.
Take one down and pass it around, 21 bottles of beer on the wall.
 
21 bottles of beer on the wall, 21 bottles of beer.
Take one down and pass it around, 20 bottles of beer on the wall.
 
20 bottles of beer on the wall, 20 bottles of beer.
Take one down and pass it around, 19 bottles of beer on the wall.
 
19 bottles of beer on the wall, 19 bottles of beer.
Take one down and pass it around, 18 bottles of beer on the wall.
 
18 bottles of beer on the wall, 18 bottles of beer.
Take one down and pass it around, 17 bottles of beer on the wall.
 
17 bottles of beer on the wall, 17 bottles of beer.
Take one down and pass it around, 16 bottles of beer on the wall.
 
16 bottles of beer on the wall, 16 bottles of beer.
Take one down and pass it around, 15 bottles of beer on the wall.
 
15 bottles of beer on the wall, 15 bottles of beer.
Take one down and pass it around, 14 bottles of beer on the wall.
 
14 bottles of beer on the wall, 14 bottles of beer.
Take one down and pass it around, 13 bottles of beer on the wall.
 
13 bottles of beer on the wall, 13 bottles of beer.
Take one down and pass it around, 12 bottles of beer on the wall.
 
12 bottles of beer on the wall, 12 bottles of beer.
Take one down and pass it around, 11 bottles of beer on the wall.
 
11 bottles of beer on the wall, 11 bottles of beer.
Take one down and pass it around, 10 bottles of beer on the wall.
 
10 bottles of beer on the wall, 10 bottles of beer.
Take one down and pass it around, 9 bottles of beer on the wall.
 
9 bottles of beer on the wall, 9 bottles of beer.
Take one down and pass it around, 8 bottles of beer on the wall.
 
8 bottles of beer on the wall, 8 bottles of beer.
Take one down and pass it around, 7 bottles of beer on the wall.
 
7 bottles of beer on the wall, 7 bottles of beer.
Take one down and pass it around, 6 bottles of beer on the wall.
 
6 bottles of beer on the wall, 6 bottles of beer.
Take one down and pass it around, 5 bottles of beer on the wall.
 
5 bottles of beer on the wall, 5 bottles of beer.
Take one down and pass it around, 4 bottles of beer on the wall.
 
4 bottles of beer on the wall, 4 bottles of beer.
Take one down and pass it around, 3 bottles of beer on the wall.
 
3 bottles of beer on the wall, 3 bottles of beer.
Take one down and pass it around, 2 bottles of beer on the wall.
 
2 bottles of beer on the wall, 2 bottles of beer.
Take one down and pass it around, 1 bottle of beer on the wall.
 
1 bottle of beer on the wall, 1 bottle of beer.
Take one down and pass it around, no more bottles of beer on the wall.
 
No more bottles of beer on the wall, no more bottles of beer. 
Go to the store and buy some more, 99 bottles of beer on the wall.'
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22.03.2019, 23:35
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