def english_number number
if number < 0 # no neg numbers
return 'Please enter a number that isn\'t negative'
end
if number == 0
return 'zero'
end
# no more special cases, no more returns
num_string = '' # This is the string we will return, define it an start 'empty'
ones_place = [ 'one', 'two', 'three',
'four', 'five', 'six',
'seven', 'eight', 'nine']
tens_place = [ 'ten', 'twenty', 'thirty',
'forty', 'fifty', 'sixty',
'seventy', 'eighty', 'ninty']
teenagers = [ 'eleven', 'twelve', 'thirteen',
'fourteen', 'fifteen', 'sixteen',
'seventeen', 'eighteen', 'nineteen']
# "left" is how much of the number we still have to write
# "write" is which part we are writing out at the time
left = number
# trillions
write = left/1000000000000
left = left - write*1000000000000
if write > 0
trillions = english_number write
num_string = num_string + trillions + ' trillion'
if left > 0
num_string = num_string + ' '
end
end
# billions
write = left/1000000000
left = left - write*1000000000
if write > 0
billions = english_number write
num_string = num_string + billions + ' billion'
if left > 0
num_string = num_string + ' '
end
end
# millions
write = left/1000000
left = left - write*1000000
if write > 0
millions = english_number write
num_string = num_string + millions + ' million'
if left > 0
num_string = num_string + ' '
end
end
# thousands
write = left/1000
left = left - write*1000
if write > 0
thousands = english_number write
num_string = num_string + thousands + ' thousand'
if left > 0
num_string = num_string + ' '
end
end
write = left/100 # how many hundreds left
left = left - write*100 # subtract off those hundreds
if write > 0
# recursion
hundreds = english_number write
num_string = num_string + hundreds + ' hundred'
if left > 0
# adds a space
num_string = num_string + ' '
end
end
write = left/10 # how many tens left
left = left - write*10 # subtract off those tens
if write > 0
if ((write == 1) and (left > 0))
# exception for teenagers
num_string = num_string + teenagers[left-1]
# -1 because of the array ordering [0] is eleven etc.
# with teenagers the digit in the ones place is taken care of so nothing left
left = 0
else
num_string = num_string + tens_place[write-1]
end
if left > 0
# add a space
num_string = num_string + '-'
end
end
write = left # how many ones left
left = 0 # subtract off those ones
if write > 0
num_string = num_string + ones_place[write-1]
end
# now we just return the num_string
num_string
end
puts english_number( 0)
puts english_number( 9)
puts english_number( 10)
puts english_number( 11)
puts english_number( 17)
puts english_number( 32)
puts english_number( 88)
puts english_number( 99)
puts english_number(100)
puts english_number(101)
puts english_number(234)
puts english_number(3211)
puts english_number(999999)
puts english_number(1000000000000)
puts english_number(1000)
puts english_number(10000)
puts english_number(1000000)
puts english_number(10000000)
puts english_number(1000000000)
puts english_number(10000000000)
3. Wedding number format.
def english_number number
if number < 0 # no neg numbers
return 'Please enter a number that isn\'t negative'
end
if number == 0
return 'zero'
end
# no more special cases, no more returns
num_string = '' # This is the string we will return, define it an start 'empty'
ones_place = [ 'one', 'two', 'three',
'four', 'five', 'six',
'seven', 'eight', 'nine']
tens_place = [ 'ten', 'twenty', 'thirty',
'forty', 'fifty', 'sixty',
'seventy', 'eighty', 'ninty']
teenagers = [ 'eleven', 'twelve', 'thirteen',
'fourteen', 'fifteen', 'sixteen',
'seventeen', 'eighteen', 'nineteen']
# "left" is how much of the number we still have to write
# "write" is which part we are writing out at the time
left = number
# trillions
write = left/1000000000000
left = left - write*1000000000000
if write > 0
trillions = english_number write
num_string = num_string + trillions + ' trillion'
if left > 0
num_string = num_string + ' '
end
end
# billions
write = left/1000000000
left = left - write*1000000000
if write > 0
billions = english_number write
num_string = num_string + billions + ' billion'
if left > 0
num_string = num_string + ' and '
end
end
# millions
write = left/1000000
left = left - write*1000000
if write > 0
millions = english_number write
num_string = num_string + millions + ' million'
if left > 0
num_string = num_string + ' and '
end
end
# thousands
write = left/1000
left = left - write*1000
if write > 0
thousands = english_number write
num_string = num_string + thousands + ' thousand'
if left > 0
num_string = num_string + ' and '
end
end
write = left/100 # how many hundreds left
left = left - write*100 # subtract off those hundreds
if write > 0
# recursion
hundreds = english_number write
num_string = num_string + hundreds + ' hundred'
if left > 0
# adds a space
num_string = num_string + ' and '
end
end
write = left/10 # how many tens left
left = left - write*10 # subtract off those tens
if write > 0
if ((write == 1) and (left > 0))
# exception for teenagers
num_string = num_string + teenagers[left-1]
# -1 because of the array ordering [0] is eleven etc.
# with teenagers the digit in the ones place is taken care of so nothing left
left = 0
else
num_string = num_string + tens_place[write-1]
end
if left > 0
# add a space
num_string = num_string + ' and '
end
end
write = left # how many ones left
left = 0 # subtract off those ones
if write > 0
num_string = num_string + ones_place[write-1]
end
# now we just return the num_string
num_string
end
puts english_number( 0)
puts english_number( 9)
puts english_number( 10)
puts english_number( 11)
puts english_number( 17)
puts english_number( 32)
puts english_number( 88)
puts english_number( 99)
puts english_number(100)
puts english_number(101)
puts english_number(234)
puts english_number(3211)
puts english_number(999999)
puts english_number(1000000000000)
puts english_number(1000)
puts english_number(10000)
puts english_number(1000000)
puts english_number(10000000)
puts english_number(1000000000)
puts english_number(10000000000)
puts english_number(1976)
4. 'Ninety-nine Bottles of Beer" using english_number.
def english_number number
if number < 0 # no neg numbers
return 'Please enter a number that isn\'t negative'
end
if number == 0
return 'zero'
end
# no more special cases, no more returns
num_string = '' # This is the string we will return, define it an start 'empty'
ones_place = [ 'one', 'two', 'three',
'four', 'five', 'six',
'seven', 'eight', 'nine']
tens_place = [ 'ten', 'twenty', 'thirty',
'forty', 'fifty', 'sixty',
'seventy', 'eighty', 'ninty']
teenagers = [ 'eleven', 'twelve', 'thirteen',
'fourteen', 'fifteen', 'sixteen',
'seventeen', 'eighteen', 'nineteen']
# "left" is how much of the number we still have to write
# "write" is which part we are writing out at the time
left = number
# trillions
write = left/1000000000000
left = left - write*1000000000000
if write > 0
trillions = english_number write
num_string = num_string + trillions + ' trillion'
if left > 0
num_string = num_string + ' '
end
end
# billions
write = left/1000000000
left = left - write*1000000000
if write > 0
billions = english_number write
num_string = num_string + billions + ' billion'
if left > 0
num_string = num_string + ' '
end
end
# millions
write = left/1000000
left = left - write*1000000
if write > 0
millions = english_number write
num_string = num_string + millions + ' million'
if left > 0
num_string = num_string + ' '
end
end
# thousands
write = left/1000
left = left - write*1000
if write > 0
thousands = english_number write
num_string = num_string + thousands + ' thousand'
if left > 0
num_string = num_string + ' '
end
end
write = left/100 # how many hundreds left
left = left - write*100 # subtract off those hundreds
if write > 0
# recursion
hundreds = english_number write
num_string = num_string + hundreds + ' hundred'
if left > 0
# adds a space
num_string = num_string + ' '
end
end
write = left/10 # how many tens left
left = left - write*10 # subtract off those tens
if write > 0
if ((write == 1) and (left > 0))
# exception for teenagers
num_string = num_string + teenagers[left-1]
# -1 because of the array ordering [0] is eleven etc.
# with teenagers the digit in the ones place is taken care of so nothing left
left = 0
else
num_string = num_string + tens_place[write-1]
end
if left > 0
# add a space
num_string = num_string + '-'
end
end
write = left # how many ones left
left = 0 # subtract off those ones
if write > 0
num_string = num_string + ones_place[write-1]
end
# now we just return the num_string
num_string
end
bottles = 999
while bottles != 0
puts english_number(bottles).to_s + ' bottles of beer on the wall'
puts english_number(bottles).to_s + ' bottles of beer'
bottles = bottles - 1
puts 'take one down, pass it around'
if bottles == 1
puts english_number(bottles).to_s + ' bottle of beer on the wall'
else
puts english_number(bottles).to_s + ' bottles of beer on the wall'
end
puts ''
if bottles == 1
puts english_number(bottles).to_s + ' bottle of beer on the wall'
puts english_number(bottles).to_s + ' bottle of beer'
bottles = bottles - 1
puts 'take one down, pass it around'
puts english_number(bottles).to_s + ' bottles of beer on the wall'
end
end
