Class: BaseAnything::NumberSystem

Inherits:
Object
  • Object
show all
Defined in:
lib/baseanything.rb

Instance Method Summary collapse

Constructor Details

#initialize(arr) ⇒ NumberSystem

Returns a new instance of NumberSystem.



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# File 'lib/baseanything.rb', line 5

def initialize(arr)
  @correspondences = make_correspondance_hash(arr)
  @base = arr.length
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, num) ⇒ Object 



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# File 'lib/baseanything.rb', line 51

def method_missing(name, num)
  name = name.to_s
  if name[0..2] == "to_"
    base = FIND_BASE["#{name[3..-1]}"]
    to_base(num, base)
  elsif name[0..4] == "from_"
    base = FIND_BASE["#{name[5..-1]}"]
    from_base(num, base)
  end
end

Instance Method Details

#add(num1, num2) ⇒ Object 



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# File 'lib/baseanything.rb', line 62

def add(num1, num2)
  decimal = own_to_dec(num1) + own_to_dec(num2)
  from_base(decimal.to_s, 10)
end

#divide(num1, num2) ⇒ Object 



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# File 'lib/baseanything.rb', line 77

def divide(num1, num2)
  decimal = own_to_dec(num1) / own_to_dec(num2)
  from_base(decimal.to_s, 10)
end

#exponent(num1, num2) ⇒ Object 



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# File 'lib/baseanything.rb', line 87

def exponent(num1, num2)
  decimal = own_to_dec(num1) ** own_to_dec(num2)
  from_base(decimal.to_s, 10)
end

#from_base(num, base) ⇒ Object 



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# File 'lib/baseanything.rb', line 30

def from_base(num, base)
  num = other_to_dec(num, base)

  output = ""
  highest_quot = 0

  while (@base ** (highest_quot+1) <= num)
    highest_quot += 1
  end

  while highest_quot >= 0
    next_digit = num / (@base ** highest_quot)
    digit_value = @correspondences.select{|k,v| @correspondences[k.to_s] == next_digit}
    output << digit_value.keys[0]
    to_remove = next_digit * (@base ** highest_quot)
    num -= to_remove
    highest_quot -= 1
  end
  output
end

#modulo(num1, num2) ⇒ Object 



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# File 'lib/baseanything.rb', line 82

def modulo(num1, num2)
  decimal = own_to_dec(num1) % own_to_dec(num2)
  from_base(decimal.to_s, 10)
end

#multiply(num1, num2) ⇒ Object 



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# File 'lib/baseanything.rb', line 72

def multiply(num1, num2)
  decimal = own_to_dec(num1) * own_to_dec(num2)
  from_base(decimal.to_s, 10)
end

#subtract(num1, num2) ⇒ Object 



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# File 'lib/baseanything.rb', line 67

def subtract(num1, num2)
  decimal = own_to_dec(num1) - own_to_dec(num2)
  from_base(decimal.to_s, 10)
end

#to_base(num, base) ⇒ Object 



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# File 'lib/baseanything.rb', line 10

def to_base(num, base)
  num = own_to_dec(num)
  output = ""
  highest_quot = 0

  while (base ** (highest_quot+1)) <= num
    highest_quot += 1
  end

  while highest_quot >= 0
    next_digit = num / (base ** highest_quot)
    output << ANY_BASE[next_digit.to_s]
    to_remove = next_digit * (base ** highest_quot)
    num -= to_remove
    highest_quot -= 1
  end

  output
end