Data commit

Task/Knapsack-problem-0-1/Julia/knapsack-problem-0-1-1.julia

@@ -0,0 +1,17 @@
+struct KPDSupply{T<:Integer}
+    item::String
+    weight::T
+    value::T
+    quant::T
+end
+
+KPDSupply{T<:Integer}(itm::AbstractString, w::T, v::T, q::T=one(T)) = KPDSupply(itm, w, v, q)
+Base.show(io::IO, kdps::KPDSupply) = print(io, kdps.quant, " ", kdps.item, " ($(kdps.weight) kg, $(kdps.value) €)")
+
+using MathProgBase, Cbc
+function solve(gear::Vector{<:KPDSupply}, capacity::Integer)
+    w = getfield.(gear, :weight)
+    v = getfield.(gear, :value)
+    sol = mixintprog(-v, w', '<', capacity, :Bin, 0, 1, CbcSolver())
+    gear[sol.sol .≈ 1]
+end

Task/Knapsack-problem-0-1/Julia/knapsack-problem-0-1-2.julia

@@ -0,0 +1,27 @@
+gear = [KPDSupply("map", 9, 150),
+        KPDSupply("compass", 13, 35),
+        KPDSupply("water", 153, 200),
+        KPDSupply("sandwich", 50, 160),
+        KPDSupply("glucose", 15, 60),
+        KPDSupply("tin", 68, 45),
+        KPDSupply("banana", 27, 60),
+        KPDSupply("apple", 39, 40),
+        KPDSupply("cheese", 23, 30),
+        KPDSupply("beer", 52, 10),
+        KPDSupply("suntan cream", 11, 70),
+        KPDSupply("camera", 32, 30),
+        KPDSupply("T-shirt", 24, 15),
+        KPDSupply("trousers", 48, 10),
+        KPDSupply("umbrella", 73, 40),
+        KPDSupply("waterproof trousers", 42, 70),
+        KPDSupply("waterproof overclothes", 43, 75),
+        KPDSupply("note-case", 22, 80),
+        KPDSupply("sunglasses", 7, 20),
+        KPDSupply("towel", 18, 12),
+        KPDSupply("socks", 4, 50),
+        KPDSupply("book", 30, 10)]
+
+pack = solve(gear, 400)
+println("The hicker should pack: \n - ", join(pack, "\n - "))
+println("\nPacked weight: ", mapreduce(x -> x.weight, +, pack), " kg")
+println("Packed value: ", mapreduce(x -> x.value, +, pack), " €")