Sync

Task/Ordered-Partitions/Ruby/ordered-partitions.rb

@@ -0,0 +1,15 @@
+def partition(mask)
+  return [[]] if mask.empty?
+  sum = mask.inject(:+)
+  a = Array.new(sum){|e| e}
+  res = a.permutation.map do |perm|
+    mask.map {|num_elts| perm.shift(num_elts).sort }
+  end
+  res.uniq
+end
+
+[[],[0,0,0],[1,1,1],[2,0,2]].each do |test_case|
+  p test_case
+  partition(test_case).each{|part| p part }
+  puts
+end