Data commit

Task/Functional-coverage-tree/Lua/functional-coverage-tree.lua

@@ -0,0 +1,94 @@
+-- DATA:
+local function node(name, weight, coverage, children)
+  return { name=name, weight=weight or 1.0, coverage=coverage or 0.0, sumofweights=0, delta=0, children=children }
+end
+
+local root =
+node("cleaning", nil, nil, {
+  node("house1", 40, nil, {
+    node("bedrooms", nil, 0.25),
+    node("bathrooms", nil, nil, {
+      node("bathroom1", nil, 0.5),
+      node("bathroom2"),
+      node("outside_lavatory", nil, 1)
+    }),
+    node("attic", nil, 0.75),
+    node("kitchen", nil, 0.1),
+    node("living_rooms", nil, nil, {
+      node("lounge"),
+      node("dining_room"),
+      node("conservatory"),
+      node("playroom",nil,1)
+    }),
+    node("basement"),
+    node("garage"),
+    node("garden", nil, 0.8)
+  }),
+  node("house2", 60, nil, {
+    node("upstairs", nil, nil, {
+      node("bedrooms", nil, nil, {
+        node("suite_1"),
+        node("suite_2"),
+        node("bedroom_3"),
+        node("bedroom_4")
+      }),
+      node("bathroom"),
+      node("toilet"),
+      node("attics", nil, 0.6)
+    }),
+    node("groundfloor", nil, nil, {
+      node("kitchen"),
+      node("living_rooms", nil, nil, {
+        node("lounge"),
+        node("dining_room"),
+        node("conservatory"),
+        node("playroom")
+      }),
+      node("wet_room_&_toilet"),
+      node("garage"),
+      node("garden", nil, 0.9),
+      node("hot_tub_suite", nil, 1)
+    }),
+    node("basement", nil, nil, {
+      node("cellars", nil, 1),
+      node("wine_cellar", nil, 1),
+      node("cinema", nil, 0.75)
+    })
+  })
+})
+
+-- TASK:
+local function calccover(node)
+  if (node.children) then
+    local cnt, sum = 0, 0
+    for _,child in ipairs(node.children) do
+      local ccnt, csum = calccover(child)
+      cnt, sum = cnt+ccnt, sum+csum
+    end
+    node.coverage = sum/cnt
+    node.sumofweights = cnt -- just as prep for extra credit
+  end
+  return node.weight, node.coverage * node.weight
+end
+calccover(root)
+
+-- EXTRA CREDIT:
+local function calcdelta(node, power)
+  node.delta = (1.0 - node.coverage) * power
+  if (node.children) then
+    for _,child in ipairs(node.children) do
+      calcdelta(child, power * child.weight / node.sumofweights)
+    end
+  end
+end
+calcdelta(root,1)
+
+-- OUTPUT:
+local function printnode(node, space)
+  print(string.format("%-32s|  %3.f   | %8.6f | %8.6f |", string.rep(" ",space)..node.name, node.weight, node.coverage, node.delta))
+  if node.children then
+    for _,child in ipairs(node.children) do printnode(child,space+4) end
+  end
+end
+print("NAME_HIERARCHY                  |WEIGHT  |COVERAGE  |DELTA     |")
+printnode(root,0)