Data commit

Task/Knapsack-problem-Continuous/Nim/knapsack-problem-continuous.nim

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+import algorithm
+import strformat
+
+type Item = object
+  name: string
+  weight: float
+  price: float
+  unitPrice: float
+
+var items = @[Item(name: "beef", weight: 3.8, price: 36.0),
+              Item(name: "pork", weight: 5.4, price: 43.0),
+              Item(name: "ham", weight: 3.6, price: 90.0),
+              Item(name: "greaves", weight: 2.4, price: 45.0),
+              Item(name: "flitch", weight: 4.0, price: 30.0),
+              Item(name: "brawn", weight: 2.5, price: 56.0),
+              Item(name: "welt", weight: 3.7, price: 67.0),
+              Item(name: "salami", weight: 3.0, price: 95.0),
+              Item(name: "sausage", weight: 5.9, price: 98.0)
+             ]
+                        ]
+# Compute unit prices and sort items by decreasing unit price.
+for item in items.mitems:
+  item.unitPrice = item.price / item.weight
+items.sort(proc (x, y: Item): int = cmp(x.unitPrice, y.unitPrice), Descending)
+
+var remaining = 15.0
+var value = 0.0
+for item in items:
+  if item.weight <= remaining:
+    echo fmt"Take all {item.name}"
+    value += item.price
+    remaining -= item.weight
+  else:
+    echo fmt"Take {remaining} kg of {item.name}"
+    value += remaining * item.unitPrice
+    break
+
+echo fmt"Total value: {value:.2f}"