Data update

Task/Knapsack-problem-Continuous/Pluto/knapsack-problem-continuous.pluto

@@ -0,0 +1,34 @@
+do  -- Knapsack problem: Continuous - based on the Algol W sample, which is based on the EasyLang sample
+
+    local class Item
+
+        function __construct( name : string, weight : number, cost : number )
+             self.name   = name
+             self.weight = weight
+             self.cost   = cost
+        end
+
+        function price() : number
+            return self.cost / self.weight
+        end
+
+    end
+
+    local sackItems = { new Item( "beef",    3.8, 36 ), new Item( "pork",    5.4, 43 )
+                      , new Item( "ham",     3.6, 90 ), new Item( "greaves", 2.4, 45 )
+                      , new Item( "flitch",  4.0, 30 ), new Item( "brawn",   2.5, 56 )
+                      , new Item( "welt",    3.7, 67 ), new Item( "salami",  3.0, 95 )
+                      , new Item( "sausage", 5.9, 98 )
+                      }
+
+    sackItems:sort( function( a, b ) return a:price() > b:price() end )
+
+    local maxWeight, i = 15, 0
+    while i <= # sackItems and maxWeight > 0 do
+        i += 1
+        local w = sackItems[ i ].weight
+        if w > maxWeight then w = maxWeight end
+        print( $"{w} kg {sackItems[ i ].name}" )
+        maxWeight -= w
+    end
+end