hash_table.rb

class HashTable
  def initialize(size)
    @size = size
    @buckets = Array.new(@size)
  end

  def add(value)
    index = hash(value)
    @buckets[index] = value
  end

  def hash(value)
    sum = 0
    0.upto(value.size-1) do |i|
      sum += value[i].ord - 97
    end
    return sum % @size
  end
end

hash = HashTable.new(3)
# => [nil, nil, nil]

hash.add('fear')
# => [nil, nil, "fear"]

hash.add('is the')
# => ["is the", nil, "fear"]

hash.add('little death')
# => ["is the", "little death", "fear"]