author | Claus Gittinger <cg@exept.de> |
Sun, 23 Feb 2020 14:03:15 +0100 | |
branch | cvs_MAIN |
changeset 3997 | 5bb44f7e1d20 |
parent 2598 | 94ae3f5f4df1 |
permissions | -rwxr-xr-x |
#!/usr/bin/env ruby require 'benchmark' class Integer def ackermann(n) return n + 1 if self == 0 if n == 0 (self - 1).ackermann(1) else (self - 1).ackermann(ackermann(n - 1)) end end end results = Benchmark.bmbm do |bm| raise "Expecting one arg - second ackermann param" if ARGV.size == 0 n = ARGV[0].to_i bm.report { 10.times { 3.ackermann(n) } } end puts "EXECUTION TIME: #{results[0].real * 1000.0}"