diff options
Diffstat (limited to 'benchmark/bm_so_fannkuch.rb')
-rw-r--r-- | benchmark/bm_so_fannkuch.rb | 90 |
1 files changed, 45 insertions, 45 deletions
diff --git a/benchmark/bm_so_fannkuch.rb b/benchmark/bm_so_fannkuch.rb index 23298a8a31..a214f2e205 100644 --- a/benchmark/bm_so_fannkuch.rb +++ b/benchmark/bm_so_fannkuch.rb @@ -1,45 +1,45 @@ -# The Computer Language Shootout
-# http://shootout.alioth.debian.org/
-# Contributed by Sokolov Yura
-# Modified by Ryan Williams
-
-def fannkuch(n)
- maxFlips, m, r, check = 0, n-1, n, 0
- count = (1..n).to_a
- perm = (1..n).to_a
-
- while true
- if check < 30
- puts "#{perm}"
- check += 1
- end
-
- while r != 1
- count[r-1] = r
- r -= 1
- end
-
- if perm[0] != 1 and perm[m] != n
- perml = perm.clone #.dup
- flips = 0
- while (k = perml.first ) != 1
- perml = perml.slice!(0, k).reverse + perml
- flips += 1
- end
- maxFlips = flips if flips > maxFlips
- end
- while true
- if r==n then return maxFlips end
- perm.insert r,perm.shift
- break if (count[r] -= 1) > 0
- r += 1
- end
- end
-end
-
-def puts *args
-end
-
-N = 10 # (ARGV[0] || 1).to_i
-puts "Pfannkuchen(#{N}) = #{fannkuch(N)}"
-
+# The Computer Language Shootout +# http://shootout.alioth.debian.org/ +# Contributed by Sokolov Yura +# Modified by Ryan Williams + +def fannkuch(n) + maxFlips, m, r, check = 0, n-1, n, 0 + count = (1..n).to_a + perm = (1..n).to_a + + while true + if check < 30 + puts "#{perm}" + check += 1 + end + + while r != 1 + count[r-1] = r + r -= 1 + end + + if perm[0] != 1 and perm[m] != n + perml = perm.clone #.dup + flips = 0 + while (k = perml.first ) != 1 + perml = perml.slice!(0, k).reverse + perml + flips += 1 + end + maxFlips = flips if flips > maxFlips + end + while true + if r==n then return maxFlips end + perm.insert r,perm.shift + break if (count[r] -= 1) > 0 + r += 1 + end + end +end + +def puts *args +end + +N = 10 # (ARGV[0] || 1).to_i +puts "Pfannkuchen(#{N}) = #{fannkuch(N)}" + |