Update all new Tasks

Task/Amb/Lua/amb-1.lua

@@ -0,0 +1,21 @@
+function amb (set)
+    local workset = {}
+    if (#set == 0) or (type(set) ~= 'table') then return end
+    if #set == 1 then return set end
+    if #set > 2 then
+        local first = table.remove(set,1)
+        set = amb(set)
+        for i,v in next,first do
+            for j,u in next,set do
+                if v:byte(#v) == u[1]:byte(1) then table.insert(workset, {v,unpack(u)}) end
+            end
+        end
+        return workset
+    end
+    for i,v in next,set[1] do
+        for j,u in next,set[2] do
+            if v:byte(#v) == u:byte(1) then table.insert(workset,{v,u}) end
+        end
+    end
+    return workset
+end

Task/Amb/Lua/amb-2.lua

@@ -0,0 +1,8 @@
+result = amb({{'the','that','a'},{'frog','elephant','thing'},{'walked','treaded','grows'},{'slowly','quickly'}})
+for i,v in next,result do
+    io.write (i,':\t')
+    for j,u in next,v do
+        io.write (u,' ')
+    end
+    io.write ('\n')
+end