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@@ -244,7 +244,7 @@ comments: true
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// 创建物品列表,包含两个属性:重量、价值
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var items = zip(wgt, val).map { Item(w: $0, v: $1) }
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// 按照单位价值 item.v / item.w 从高到低进行排序
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items.sort(by: { -(Double($0.v) / Double($0.w)) < -(Double($1.v) / Double($1.w)) })
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items.sort { -(Double($0.v) / Double($0.w)) < -(Double($1.v) / Double($1.w)) }
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// 循环贪心选择
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var res = 0.0
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var cap = cap
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