bench/shootout/harmonic.ruby-2.ruby

   1 #!/usr/bin/ruby
   2 # http://shootout.alioth.debian.org/
   3 #
   4 # Contributed by Christopher Williams
   5 # modified by Daniel South
   6 # modified by Doug King
   7
   8 n = (ARGV[0] || 10000000).to_i
   9
  10 partialSum = 0.0
  11 for i in (1..n)
  12   partialSum += (1.0 / i)
  13 end
  14
  15 printf("%.9f\n", partialSum)