Commit b2433c6

@@ -54,5 +54,6 @@ describe "problem nine" do
       (triplet[0] + triplet[1] + triplet[2]) == 1_000
     end
     expect(result).to eql([375, 200, 425])
+    puts 375*200*425
   end
 end

@@ -0,0 +1,46 @@
+require 'spec_helper'
+require 'prime'
+
+describe "problem ten" do
+  #The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17.
+
+  #Find the sum of all the primes below two million.
+
+  class SumOfPrime
+    attr_reader :limit
+
+    def initialize(limit)
+      @limit = limit
+    end
+
+    def sum
+      each.reduce(:+)
+    end
+
+    def each
+      Prime.each(limit)
+      #Enumerator.new do |yielder|
+        #2.upto(limit) do |n|
+          #yielder.yield(n) if prime?(n)
+        #end
+      #end
+    end
+
+    private
+
+    def prime?(number)
+      (2...number).each do |n|
+        return false if number % n == 0
+      end
+      true
+    end
+  end
+
+  it 'returns the sum of the primes below 10' do
+    expect(SumOfPrime.new(10).sum).to eql(17)
+  end
+
+  it 'returns thesum of the primes below 2_000_000' do
+    expect(SumOfPrime.new(2_000_000).sum).to eql(142_913_828_922)
+  end
+end