knapsack_light.rb

def knapsackLight(value1, weight1, value2, weight2, maxW)
    if weight1 + weight2 <= maxW then
       return value1 + value2
    end

    if value1 > value2 and weight1 <= maxW then
       return value1
    end

    if value2 > value1 and weight2 <= maxW then
       return value2
    end

    if value1 < value2 and weight1 <= maxW then
       return value1
    end

    if value1 == value2 then
       return value1
    end

    return 0
end